Rhubarb Crunch 2 cups Rhubarb 1 tsp. lemon juice 1 large pkg. white cake mix 1/2 cup chopped nuts 1stick melted margarine Preheat oven to 350F. Spread pie filling in the bottom of a 9" square pan. Sprinkle with lemon juice. Combine dry cake mix, nuts, and melted butter. Sprinkle over pie filling. Bake 40-50 minutes until golden brown.