Mother's apple coffee cake

1 1/2 cup flour
1/2 cup sugar
2 t. baking powder
1/2 t salt
1 egg beaten slightly
2/3 cup milk
3 T. oil
Mix all ingredients together, put in 2 cake pans and put apples in circles on top.Sprinkle with cinnamon and sugar.
Bake 425" 15-20 min.