Prepare cake batter according to the box directions. Set aside.
Place strawberries in a greased 9x13 baking dish.
Evenly sprinkle dry jello mix over top of strawberries.
Next, sprinkle the marshmallows over the top.
Finally, pour cake batter over top.
Bake for 50 minutes or until a toothpick comes out clean.
Allow cake to cool for 20 minutes. Then gently run a knife around the edges and flip cake out onto a serving tray.
Allow to cool completely, then serve or cover and refrigerate.
Notes
The calories shown are based on the cake being cut into 15 pieces, with 1 serving being 1 slice of cake. Since different brands of ingredients have different nutritional information, the calories shown are just an estimate. **We are not dietitians and recommend you seek a nutritionist for exact nutritional information.**