Fruit Crisp

I usually make this recipe with apples or rhubarb but I've also tried it with peaches and strawberries. This is a family favourite. A double recipe makes a 9x13.

Crumbs:
1/2 cup melted margarine
1 1/2 cups oatmeal
2/3 cup brown sugar
1/4 cup flour
1 tsp cinnamon
1/2 tsp allspice

Fruit:
4 cups fruit, chopped
3/4 cup sugar
1 1/2 T flour

Mix the fruit with sugar and flour and spread evenly in an 8x8 pan. Combine the crumbs (add the margarine last) and spread on top. Bake 45 minutes at 350. Serve warm with ice cream.