Grandma Wanda’s Recipe (Fruit Crisp maybe?)

1/4 cup tapioca
1/2 cup water
1/2 cup sugar
1/4 tsp nutmeg
On bottom:
3 Tbsp cornstarch
1 cup sugar
1/4 tsp nutmeg
1/4 tsp lemon
1/2 c water
On top:
1 square margarine
1/2 cup brown sugar
1/2 cup oatmeal
…anybody want to try this and see if it works?