Oatmeal Chocolate Chip Cupcakes with Brown Sugar Buttercream recipes

Name: Oatmeal Chocolate Chip Cupcakes with Brown Sugar Buttercream recipes
Ingredients: 7/8 cup boiling water; 1/2 cup quick oatmeal; 1/4 cup butter or margarine; 1/2 cup brown sugar; 1/2 cup granulated sugar; 1 egg (slightly beaten); 1 cup flour; 1/4 teaspoon salt; 1/2 teaspoon baking soda; 1/2 teaspoon cinnamon; 1/2 tablespoon cocoa powder; 1 cup chocolate chips (mini would work best); 2 large egg whites; 1/2 cup packed light-brown sugar; 3/4 cup (1 1/2 sticks) unsalted butter, room temperature, cut into tablespoons