Blackberry Custard Pie - cooking recipe

Ingredients

1 1/2 c. blackberries
1 c. sugar
2 tsp. margarine
1/2 c. milk
3 tsp. flour
1 pie shell
1 1/2 c. Cool Whip

Preparation

Cook blackberries; add sugar and stir.
Add margarine and stir.
Mix 1/2 cup milk and flour, stirring until the mixture is not lumpy.
Combine blackberries and flour mixture and cook until done.
Pour mixture into pie shell.
Let cool, then top with 1 1/2 cups Cool Whip.