Mustache Cupcakes

Name: Mustache Cupcakes
Prep time: 50 min
Yield: 30
Ingredients: 1 3/4 cups cake mix, vanilla; 1 1/4 cups flour; 1 cup butter with salt, at room temperature; 2 cups sugar; 1 teaspoon baking powder; 4 eggs; 1/2 cups cow's milk; 1/2 cups plain yogurt; 2 teaspoons vanilla essence; 1 cup unsalted butter, at room temperature (for the frosting); 6 cups icing sugar, (for the frosting); 1/2 cups cow's milk, (for the frosting); 1 1/2 teaspoons vanilla essence, (for the frosting); chocolate chips