2 c. Bisquick
1 c. sugar
2 eggs
1 c. milk
1 tsp. vanilla

TOPPING:

1/3 c. brown sugar
1/2 stick butter
2 tbsp. flour
2 c. or more rhubarb, cubed, uncooked

Preheat oven to 350 degrees. Spray 9x13 inch pan with Pam.

Mix all cake ingredients together and pour into pan.