Grease and flour a 9×12 pan and preheat the oven according to the cake mix box directions.
In a large mixing bowl, prepare the cake per instructions on the box, substituting orange juice in place of the water.
1 white cake mix, 1 cup orange juice
Bake according to the directions on the box.
Remove from the oven and poke holes all over the top with a fork.
Add the Jell-o to boiling water and let dissolve and cool for 5 minutes.
1 large box of orange OR raspberry Jell-o, 2 cups boiling water
Slowly spoon the Jell-o mixture over the top of the cake, making sure it goes in all of the little holes.
Cool completely in the refrigerator.
Spread the the cake with the whipped cream and garnish with fresh raspberries and (optional) orange zest.
Homemade whipped cream, 1 pint raspberries, Orange zest
If not serving immediately, store the cake in the refrigerator. Left overs should be placed in an airtight container for up to a week (if it lasts that long!)