Kiwi Cupcakes - (from The Best Cupcake Recipes) - 1-2 whole fresh kiwis (1/3 c. mashed kiwi)...1 1/2 c. all-purpose flour...1 t. baking powder...1/4 t. sea salt...1/4 c. milk...1 t. vanilla extract...1/2 c. (1 stick) unsalted butter, room temp...slightly over 3/4 c. granulated sugar...1 egg...2 egg whites