DULCE DE LECHE CHURRO MUFFINS

Name: DULCE DE LECHE CHURRO MUFFINS
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Cuisine: American, Mexican
Ingredients: 2 cups all-purpose flour; 1 and ½ teaspoon baking powder; ½ teaspoon baking soda; ½ teaspoon ground cinnamon; 1 teaspoon freshly grated nutmeg; ½ teaspoon salt; ½ cup butter (unsalted at room temperature); ⅓ cup granulated sugar; ½ cup brown sugar; 2 large eggs (at room temperature); ¼ cup whole milk; ½ cup sour cream (buttermilk or Greek yogurt); 1 teaspoon pure vanilla extract; ½ cup granulated sugar; 2 teaspoon ground cinnamon; 5 tablespoons butter (unsalted, melted); Dulce de leche (or dulce de leche)