There’s something magical about the combination of zesty key lime and sweet, luscious mango that instantly transports me to a sun-drenched beach. That's why I’m head over heels for these Mango Key Lime Cupcakes! This recipe is not just a simple dessert; it marries tropical flavors with an inviting creaminess that can make any gathering feel like a celebration. With only 50 minutes of your time, you'll whip up these crowd-pleasers—perfect for family, friends, or even a well-deserved treat for yourself. Plus, they’re freezer-friendly, so you can always have a delightful bite on hand! Intrigued by how to make these bright, beautiful cupcakes? Let’s dive in!

Why are Mango Key Lime Cupcakes irresistible?
Bold flavors: The vibrant zesty lime perfectly balances the rich, sweet mango, creating a flavor explosion in every bite.
Easy to make: With straightforward steps, you’ll find the process user-friendly for bakers of all levels.
Perfect for any occasion: Whether it’s a summer gathering or a cozy evening at home, these cupcakes add a touch of tropical flair to any celebration.
Moist and creamy: Each cupcake is filled with a delightful key lime custard, enhancing the already delectable texture.
Freezer-friendly: Make a batch in advance and have these delightful treats ready whenever you need a sweet pick-me-up!
Mango Key Lime Cupcakes Ingredients
For the Cupcake Batter
- 2% milk – This keeps the cupcakes moist and tender; feel free to use almond milk for a dairy-free option.
- Key lime juice – Freshly squeezed key lime juice enhances the zesty flavor; bottled juice works too but may taste less vibrant.
- Pureed mango – Using fresh mango puree brings a natural sweetness, but store-bought puree is a convenient alternative.
- Sugar – Regular granulated sugar sweetens the mix; you can replace with coconut sugar for a lower-glycemic option.
- All-purpose flour – Provides structure; you can substitute with gluten-free flour for a GF version.
- Water – Helps to balance the batter's consistency; you can use coconut water for extra flavor.
- Sour cream – Creates a rich, creamy texture; Greek yogurt makes a great substitute.
- Butter – Adds flavor and richness; use unsalted butter to control the salt levels in your cupcakes.
- Vanilla extract – Enhances all the flavors beautifully; for a twist, try almond extract!
For the Frosting
- Vegetable shortening – Creates a stable frosting; can replace with softened butter if you prefer a richer taste.
- Powdered sugar – Sweetens and thickens the frosting; keep some extra on hand to achieve your desired consistency.
For the Filling
- Key lime custard – This luscious filling makes each cupcake extra special; homemade is best, but store-bought can save time.
- Extra pureed mango – An optional swirl in the frosting gives it a delightful fruitiness; you can omit if you prefer a simpler flavor profile.
Keep these ingredients handy, and you'll be well on your way to creating the most delicious Mango Key Lime Cupcakes you've ever tasted!
Step‑by‑Step Instructions for Mango Key Lime Cupcakes
Step 1: Preheat the Oven
Start by preheating your oven to 350°F (175°C). This step is essential as it ensures your Mango Key Lime Cupcakes bake evenly and rise beautifully. While the oven warms up, gather your mixing bowls, measuring cups, and a muffin pan to prepare for the batter.
Step 2: Mix Dry Ingredients
In a large mixing bowl, combine the sugar and all-purpose flour. Gradually pour in the 2% milk, whisking until the mixture is smooth and free of lumps. This helps create a solid base for your cupcakes. The batter should be slightly thick yet pourable; perfect for a fluffy cupcake texture!
Step 3: Add Wet Ingredients
Next, add the freshly squeezed key lime juice, sour cream, and softened butter to the bowl. Blend these ingredients together until fully incorporated and creamy. The combination of the zesty lime and creamy elements will infuse your cupcakes with a delightful flavor that balances perfectly with the mango.
Step 4: Incorporate Mango Puree
Now, gently fold in the pureed mango into the mixture, ensuring it's evenly distributed throughout the batter. This will add sweetness and moisture, making your Mango Key Lime Cupcakes even more irresistible. The batter should now have a bright, tropical hue that’s exciting to bake!
Step 5: Fill the Muffin Pan
Using a ladle or a measuring cup, carefully fill your prepared muffin pan cups about two-thirds full with the batter. This allows space for the cupcakes to rise. If you’d like, you can line the pan with cupcake liners to make them easy to remove once baked.
Step 6: Bake the Cupcakes
Place the muffin pan in the preheated oven and set a timer for 25 minutes. Keep an eye on them; the cupcakes are done when they are lightly golden on top and a toothpick inserted into the center comes out clean. This visual cue guarantees a perfectly baked treat!
Step 7: Cool the Cupcakes
Once baked, remove the muffins from the oven and let them cool in the pan for about 10 minutes. Then, transfer them to a wire rack to cool completely. This step prevents sogginess and ensures your Mango Key Lime Cupcakes have the right texture for filling and frosting later on.
Step 8: Prepare the Key Lime Custard
While the cupcakes cool, make the key lime custard filling according to your recipe or package instructions. Allow the custard to cool while you prepare the frosting; this extra step ensures the filling stays smooth and creamy when you fill the cupcakes.
Step 9: Fill Each Cupcake
Once the cupcakes are completely cooled, use a small knife or a cupcake corer to create a hole in the center of each cupcake. Carefully fill each cavity with the key lime custard you prepared, ensuring they are generously filled for that delightful burst of flavor in every bite.
Step 10: Make the Frosting
In a clean mixing bowl, beat together the vegetable shortening and powdered sugar until well combined and smooth. This will create a stable frosting that holds its shape beautifully when piped onto your cupcakes. You’re now ready to add a touch of sweetness with the creamy frosting!
Step 11: Add Mango to the Frosting
Next, mix in the remaining pureed mango and vanilla extract into the frosting mixture. Beat until everything is smooth and well combined. This fruity addition amplifies the overall flavor profile of your Mango Key Lime Cupcakes, making them even more delightful.
Step 12: Frost the Cupcakes
Finally, use a piping bag fitted with your favorite tip or a simple spatula to frost each filled cupcake generously. Let the vibrant mango frosting swirl on top reflect the sunny flavors within. Your beautiful Mango Key Lime Cupcakes are now ready to be shared or enjoyed as a well-deserved treat!

What to Serve with Mango Key Lime Cupcakes?
There's no better way to complement your tropical treats than with equally delightful sides and drinks!
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Tropical Fruit Salad: A medley of pineapple, kiwi, and papaya adds a refreshing balance to the cupcakes' sweetness. The vibrant colors and textures will brighten up your dessert table.
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Chilled Coconut Water: This hydrating drink enhances the tropical vibe and quenches thirst, making it a perfect companion to your zesty cupcakes. Sip it slowly while enjoying your sweet creations!
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Coconut Whipped Cream: Light and airy, this topping enhances the creaminess of the cupcakes, bringing a delightful new layer to every bite. It's great for those who love an extra dollop of indulgence!
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Lime Sorbet: The tartness of lime sorbet cuts through the sweetness of the cupcakes, offering a refreshing contrast. It’s a light dessert option perfect for summer days!
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Grilled Shrimp Skewers: The smoky flavor and spices of grilled shrimp pair well with the tropical notes in the cupcakes. This savory addition brings excitement and balance to your meal.
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Chocolate Dipped Strawberries: These sweet treats add a touch of romance to your dessert spread, with rich flavors that complement the tangy key lime perfectly. Perfect for sharing!
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Pineapple Upside-Down Cake: The caramelized fruit and buttery cake harmonize beautifully with the cupcakes, creating a comforting finish to your meal. Each slice is a little celebration!
Mango Key Lime Cupcakes Variations
Feel inspired to add your personal touch to these delightful cupcakes, transforming them into your very own signature treat!
- Dairy-Free: Swap 2% milk and sour cream for almond milk and coconut yogurt for a creamy, dairy-free version.
- Gluten-Free: Use a gluten-free flour blend instead of all-purpose flour to accommodate gluten sensitivities while keeping the texture amazing.
For a thicker physique, add an extra egg or egg replacement to bind the ingredients together. These swaps won’t compromise the delicious flavor!
- Spicy Twist: Incorporate a pinch of cayenne or jalapeño powder into the batter for an unexpected kick! The heat from the spices perfectly contrasts the sweetness of the cupcakes.
This bold twist will not only surprise your guests but will leave them asking for the secret ingredient!
- Nutty Addition: Fold in some finely chopped almonds or pecans for added texture and crunch. The nuts provide a delightful contrast to the creamy custard filling.
Chop the nuts finely to ensure they blend seamlessly, enhancing each bite with delightful little surprises.
- Fruity Frosting: Mix in a splash of pineapple juice for an extra fruity layer to your frosting. This will brighten up the frosting, making your cupcakes even more irresistible.
As you pipe the frosting, the tropical medley of flavors will leave a lasting impression on everyone.
- Lime Zest Infusion: Add lime zest to both the batter and the frosting to amplify that zesty flavor. The zest intensifies the key lime essence, taking these cupcakes to new heights.
The vibrant green specks will not only look beautiful but will also entice your taste buds even more!
- Vegan-Friendly: Substitute all eggs and dairy ingredients with flax eggs and plant-based alternatives, enjoying the same delicious flavors without any animal products.
This variation ensures everyone can indulge guilt-free!
- Chocolate Drizzle: For chocolate lovers, drizzle melted dark chocolate atop the frosted cupcakes. The rich chocolate complements the tangy key lime and sweet mango perfectly.
Adding that drizzle creates a beautiful presentation, turning your cupcakes into a work of art.
How to Store and Freeze Mango Key Lime Cupcakes
Fridge: Store leftover cupcakes in an airtight container in the fridge for up to 3 days. This helps maintain their moist texture and enhances the flavors as they meld.
Freezer: For long-term storage, wrap each cupcake individually in plastic wrap and place them in a freezer-safe bag. They can be frozen for up to 3 months.
Thawing: When ready to enjoy, thaw the frozen cupcakes in the fridge overnight and frost them just before serving. This ensures they remain delicious and fresh!
Reheating: If you prefer warm cupcakes, microwave them for about 10-15 seconds before enjoying, watching carefully to avoid overheating.
Expert Tips for Mango Key Lime Cupcakes
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Key Lime Freshness: Always use fresh key lime juice for the best flavor; bottled juice can taste flat and less zesty.
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Soft Butter: Make sure your butter is at room temperature to blend smoothly, ensuring a light and airy cupcake texture.
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Cool Completely: Let your cupcakes cool entirely before filling; this prevents the custard from melting and maintains their structure.
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Frosting Stability: When making frosting, ensure vegetable shortening and powdered sugar are well blended, preventing any graininess in your frosting.
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Cupcake Storage: Store leftover cupcakes in an airtight container in the fridge; they stay fresh while the flavors meld wonderfully.
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Mixing Technique: Be gentle when folding in the pureed mango; overmixing can lead to denser cupcakes, so keep it light!
Keep these tips in mind, and you'll create the most delightful Mango Key Lime Cupcakes that everyone will love!
Make Ahead Options
These Mango Key Lime Cupcakes are perfect for meal prep enthusiasts! You can prepare the cupcake batter and store it in the refrigerator for up to 24 hours before baking—just be sure to cover it tightly to prevent any drying out. Additionally, the key lime custard filling can be made 3 days in advance and stored in an airtight container in the fridge, keeping its delicious flavor intact. When you’re ready to bake, simply fill your muffin pan and bake as directed. For the frosting, whip it up on the same day as serving for best results, but it can also be made up to 48 hours ahead; just give it a quick re-whip before piping. With these make-ahead options, you’ll save precious time while still enjoying every zesty bite of your lovely Mango Key Lime Cupcakes!

Mango Key Lime Cupcakes Recipe FAQs
How do I know if my mangoes are ripe for the puree?
Absolutely! Ripe mangoes are the key to delicious puree. Look for mangoes that are slightly soft to the touch and have a sweet fragrance. If there are dark spots or wrinkles, they might be overripe, while green, firm mangoes are often underripe—not ideal for this recipe.
How should I store leftover Mango Key Lime Cupcakes?
Very! Store leftover cupcakes in an airtight container in the refrigerator for up to 3 days. This keeps them fresh and allows the zesty flavors to meld even further. Just remember to allow them to cool completely before storage to maintain their perfect texture.
Can I freeze Mango Key Lime Cupcakes? How?
You can! Wrap each cooled cupcake individually in plastic wrap and place them in a freezer-safe bag. They can be frozen for up to 3 months. When you're ready to enjoy, simply thaw them in the fridge overnight and frost just before serving. This step revives their freshness beautifully!
What should I do if my cupcakes sink in the middle?
If you notice your cupcakes sinking, it’s typically due to either overmixing the batter or opening the oven door too soon during baking. To counter this, mix gently when incorporating the pureed mango, and make sure to keep the oven door closed for the first 20 minutes of baking to maintain consistent heat.
Are these cupcakes suitable for those with allergies?
These cupcakes contain dairy and gluten; however, you can easily modify them to accommodate dietary needs. For a dairy-free version, substitute with almond milk and Greek yogurt alternatives. Use gluten-free flour for those avoiding gluten. Always double-check ingredient labels to ensure they meet your requirements!
How long will the frosting last?
If you have leftover frosting, store it in an airtight container at room temperature for 1-2 days or in the fridge for up to a week. Just make sure to give it a good stir before using, as it may harden slightly when chilled. Enjoy decorating those beautiful Mango Key Lime Cupcakes!

Zesty Mango Key Lime Cupcakes You’ll Love to Indulge In
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C). Gather mixing bowls, measuring cups, and a muffin pan.
- Combine sugar and all-purpose flour in a large mixing bowl. Gradually whisk in the 2% milk until smooth.
- Add key lime juice, sour cream, and softened butter to the bowl. Blend until creamy.
- Gently fold in the pureed mango until evenly distributed.
- Fill muffin pan cups about two-thirds full with batter. Line with cupcake liners if desired.
- Bake for 25 minutes or until golden and a toothpick comes out clean.
- Cool muffins in the pan for 10 minutes, then transfer to a wire rack to cool completely.
- Prepare key lime custard filling as per instructions. Allow to cool.
- Create a hole in the center of each cooled cupcake and fill with key lime custard.
- Beat together vegetable shortening and powdered sugar until smooth to make frosting.
- Mix remaining pureed mango and vanilla extract into the frosting until combined.
- Frost each filled cupcake generously, showcasing the vibrant mango frosting.





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