Churro Cupcakes with Cinnamon Mascarpone Frosting

Ingredients

• 1 1/2 cups all-purpose flour
• 1 1/2 teaspoons cinnamon
• 1 1/2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon salt
• 1/2 (1 stick) cup unsalted butter, at room temperature
• 1 cup sugar
• 2 eggs, at room temperature
• 1 teaspoon vanilla extract
• 1/2 cup milk, at room temperature
• 1/2 cup sugar
• 3/4 cup dulce de leche
• 1/4 cup sour cream
• 1 cup heavy cream
• 8 ounces mascarpone cheese, room temperature
• 1/2 cup confectioners’ sugar, sifted
• 1/4 tsp. cinnamon