Prepare the cake mix in a 9×13-inch baking pan according to the package instructions.
1 box white cake mix
Use the handle of a wooden spoon or a large straw to poke holes into the warm cake; set aside.
In a large microwave-safe bowl, add the boiling water and gelatin; mix for 1 minute or until the sugar is dissolved.
1/2 cup boiling water, 1 3-ounce box strawberry gelatin
Add the sliced strawberries (and the juice they're packed in) and stir well.
1 15.5-ounce container frozen sliced strawberries with sugar
Slowly pour the gelatin mixture over the cake, allowing it time to soak into every part of the cake. Some of the strawberries will flow out with the gelatin; the rest of them can be spooned over the cake.
Refrigerate for 6 hours or overnight.
In a large bowl, whisk together the pudding mix, powdered sugar and milk for about 1 minute.
1 3.4-ounce box instant pudding mix, 1 cup cold milk, 1/2 cup powdered sugar
Let the mixture set for 5 minutes to thicken.
Fold in the thawed whipped topping with a rubber spatula.
1 8-ounce tub whipped topping
Spread the topping over the cake and garnish with fresh strawberries, if desired.
diced strawberries