Rinse ¾ cup of Arborio rice under cold running water until mostly clear; about 2-3 minutes.

Combine 4 cups of whole milk, ½ cup of granulated sugar, and ¼ teaspoon of salt in a saucepan over medium heat. Stir until sugar dissolves and milk is warm, about 5-7 minutes.

Stir in rinsed Arborio rice. Bring to a gentle simmer, about 2-3 minutes.

Reduce heat to low and cook uncovered for 30-35 minutes, stirring frequently until rice is tender and pudding is creamy.

Remove from heat and stir in 1 tablespoon of unsalted butter and 1½ teaspoons of vanilla extract until combined.

Spoon into bowls immediately for a warm treat or chill in the refrigerator and serve later, topping with ground cinnamon if desired.