Preheat your oven to 350°F (175°C).

In a large mixing bowl, combine the white cake mix, eggs, water, and oil according to package directions. Mix until smooth (2-3 minutes). Pour the batter into a greased 9x13-inch baking dish.

Bake in the preheated oven for 25-30 minutes, or until a toothpick inserted comes out clean.

Remove the cake from the oven and let cool in the pan for 10 minutes.

Using a fork, poke holes evenly across the top of the still-warm cake.

In a mixing bowl, dissolve the strawberry gelatin in 1 cup of boiling water. Stir in 1/2 cup of cold water. Let cool but do not allow it to set.

Pour the cooled gelatin mixture over the poked cake, ensuring it seeps into the holes.

Cover with plastic wrap and refrigerate for at least 2 hours.

Spread the whipped topping evenly across the top of the cake.

Garnish with festive sprinkles or mini marshmallows. Cut into squares and serve chilled.