3 simple birthday Recipes

unsalted butter , plus additional for cake pans, baking soda, kosher salt, baking powder, all-purpose flour, eggs, granulated sugar, vanilla extract, sour cream, coarsely chopped semisweet chocolate, cool water, plus more for the double boiler, cream of tartar, granulated sugar, egg whites, room temperature, light corn syrup, vanilla extract

whole wheat flour, baking powder, natural-style peanut butter, skim milk