http://www.cdkitchen.com/recipes/recs/38/Impossible_Rhubarb_Pie36343.shtml

IMPOSSIBLE RHUBARB PIE

3 cups chopped rhubarb
4 eggs
1/2 cup Bisquick
3 tablespoons melted butter
1/4 teaspoon salt
1 1/2 cup sugar
1 teaspoon vanilla extract
1 cup milk

directions

Heat oven to 375 degrees F. Grease 10" pan, put rhubarb in pan. 

Blend all remaining ingredients for 3 minutes. Pour over rhubarb. Let set for a few minutes. Bake 40 to 45 minutes.