MCDonald's Apple Muffin Yield: 24 copycat Servings 21 oz Apple pie filling 3 Eggs 2 ts Apple pie spice 18 oz Yellow cake mix Beat all together with electric mixer on medium-speed. Divide batter equally between 24 paper-lined cupcake wells. Bake 350~ 25 to 30 minutes or until knife inserted comes out clean. Cool before peeling off paper liners.