SAUCE:

2 tbsp. melted butter
2 tbsp. flour
1 c. evaporated milk
1 c. water
1/2 c. sugar

Blend butter and flour together. Add remaining ingredients and cook over water for 15 minutes. Cool and add 1 teaspoon vanilla.

18 graham cracker squares
3 bananas

Layer 6 crackers, sliced bananas and sauce 3 times. Chill. Top with whipped cream before serving. 6 servings.