1/2 cup Bisquick
2 tbsp. milk
1 1/2 cups sliced rhubarb
2/3 cup boiling water
1/3 cup brown sugar
1 1/2 tbsp. butter
1 tsp. vanilla
1/4 tsp. cinnamon

Preheat oven to 350°F.

Mix Bisquick with milk to make dough. Add rhubarb and pat into a greased and floured 8-inch square pan.

Add brown sugar and butter to boiling water; stir until dissolved. Stir in vanilla and cinnamon. Pour over Bisquick mixture and bake for 45 minutes.

Note: If using frozen rhubarb, thaw completely first.