Snickerdoodle Muffins with Yogurt Frosting

Name: Snickerdoodle Muffins with Yogurt Frosting
Cuisine: American
Ingredients: 1-1/2 teaspoons cinnamon; 2 tablespoons granulated sugar; 1/2 cup unsalted butter; 1/2 cup granulated sugar; 2 large eggs; 1/2 cup milk; 1 teaspoon vanilla extract; 1/4 cup plain Greek yogurt; 2 cups all-purpose flour; 2 teaspoons baking powder; 1/4 teaspoon baking soda; 1 teaspoon ground cinnamon; 1/4 teaspoon salt; 8 ounces cream cheese, softened; 1/3 cup plain Greek yogurt; 5 tablespoons maple syrup; 1/2 teaspoon cinnamon; 1/2 teaspoon vanilla extract