Mix eggs and sugar together until light and lemon colored. Then add flour and cinnamon. Peel and slice 4-5 apples, put sliced apples in the bottom of a pan, pour batter over the apples and bake in a preheated 350 F oven 40-50 minutes or until it tests done with a toothpick. Turn out onto a plate to cool making sure apples are on top. Sorry I forgot to write in to grease the pan. I used a nonstick Bundt pan.