Preheat your oven to 350°F (175°C). In a large bowl, mix the cake mix, eggs, water and oil. Use a whisk or mixer until the batter becomes smooth.

Pour the batter into a greased 9x13 baking pan. Spread it evenly with a spatula. Bake the cake for about 30 minutes until a toothpick inserted in the center comes out clean.

Remove the cake from the oven and place it on a cooling rack. Let it cool for about fifteen minutes. The cake should still be slightly warm.

Use a fork or wooden skewer to poke holes across the entire cake surface. Space the holes about one inch apart. These holes will hold the strawberry gelatin.

In a bowl, dissolve the strawberry gelatin in one cup of boiling water. Stir well until completely dissolved. Add half a cup of cold water and mix again.

Slowly pour the prepared gelatin mixture over the cake. Make sure it flows into the holes. This step helps the cake absorb the strawberry flavor.

Place the cake in the refrigerator for at least two hours. Chilling helps the gelatin set and makes the cake moist and flavorful.

Spread the whipped topping evenly over the chilled cake. Use a spatula to smooth the surface. This creamy layer balances the fruity flavor.

Arrange the sliced strawberries over the whipped topping. You can sprinkle a little powdered sugar on top for extra sweetness and decoration.

Cut the cake into squares and serve cold. Each slice will show beautiful strawberry lines inside the cake. Enjoy this light and delicious dessert.