-
Preheat an oven to 350 degrees F.
-
Spread crushed strawberries on the bottom of a 9x13 inch baking pan. Evenly sprinkle strawberries with the dry gelatin powder, and top with mini marshmallows.
-
Prepare the cake mix as directed on the package and pour on top of the marshmallows. Bake in the preheated oven until a toothpick inserted into the center comes out clean, about 40 to 50 minutes. Cool in the pan for 15 minutes. Run a knife around the pan to loosen the sides and turn the cake out onto a serving tray.
-
Refrigerate before serving and serve with Coolwhip.