Spread 3 cups cut up rhubarb in 7 x 11 pan. Sprinkle small 3 oz. box of strawberry or raspberry jello over fruit. put box of DRY Jiffy yellow or white cake mix over top. Sprinkle chopped pecan or walnuts over top of cake mix. Melt stick of oleo or butter and pour over top of nuts. Bake about 45 min at 350 degrees.
Can also use a mixture of strawberries, rhubarb, raspberries or blackberries and its delicious. I also use sugar free Jello. If you like it very sweet, sprinkle a little sugar over fruit but just the Jello makes it sweet enough.
You can also make it in 9 x 13 pan--use more fruit and a large size cake mix.