▢1 (15.25-ounce) box white cake mix plus any ingredients listed on box ▢1 (3-ounce) box strawberry Jell-O (or raspberry or cherry) ▢1 cup boiling water ▢1 cup cold water ▢1 (8-ounce) tub whipped topping (or 2 cups whipped cream)
Prepare cake as directed on the box and bake in a 9-x-13-inch baking dish.
Let cool for 15 minutes.
Poke cake with a fork at ½–1-inch intervals.
Use hot and cold water to make Jell-O as directed on the package.
Spoon Jell-O liquid over the cake gradually until it is all absorbed.
Chill in the refrigerator for 3–4 hours. Top with whipped topping right before serving.