This No-Bake Strawberry Icebox Cake is heavenly. It’s seriously no bake. The “cake” is really graham crackers that have gotten soft thanks to the whipped topping and strawberries. I'd use GF ingredients.
1 box white cake, 12 oz 7 up, 1 box strawberry Jello, Cool whip & fresh strawberries. Combine cake mix with diet 7 up, bake as labeled on box, then cool. Poke holes in cake with fork. Mix sugar free Jello with 1 cup hot water, stir until dissolved then add 1 cup cold water - pour over cake. Refrigerate for a couple hours. Spread fat free Cool Whip over cake and top with fresh strawberries.