Apple and Sweet Potato Pie

The sweetness of the apple and sweet potato makes this dish appealing to kids I started serving this one when my son was about 8 months old.
Mash it when its cooked for younger children

1 red apple
1 cup cooked sweet potato
1/4 cup milk
1/2 teaspoon flour

Peel and slice apple, add sliced apple and cooked Sweet potato in layers in a greased casserole dish, add flour to milk and mix,add milk mixture,cover and bake for 30mins in a moderate oven