This cake has major retro potluck energy in the best possible way. Bright pink strawberry streaks, fluffy whipped topping, and somehow every slice tastes colder and better straight from the fridge at midnight. Dangerous little cake honestly.
The whole thing is wonderfully low effort too. Bake a cake, poke holes in it like a dessert detective, pour over the Jello, then let the refrigerator handle the rest. Tiny bit of patience, very big reward.
For the Cake & Filling:
For the Topping:

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Dive into a slice of pure nostalgia with the Strawberry Jello Poke Cake! This dessert is a beloved American classic, rising to fame in the 1970s as a fun and creative way to elevate a simple boxed cake mix. The concept is brilliantly simple: a baked cake is poked with holes and then infused with liquid gelatin, which sets up inside the cake to create moist, flavorful tunnels of fruity goodness. It's a dessert that's as fun to make as it is to eat.
Prepare the cake pan
Grease a 9x13-inch baking pan lightly with nonstick spray or butter.
Bake the cake
Prepare the white cake mix according to the package instructions using the ingredients listed on the box. Pour the batter into the prepared pan and bake until golden and fully set.
Poke the holes
While the cake is still slightly warm, use the handle of a wooden spoon or a thick skewer to poke holes evenly across the surface of the cake. Space them about 1 inch apart so every slice gets plenty of strawberry filling.
Cool the cake completely
Let the cake cool fully before adding the gelatin mixture. This step matters more than people think. Warm cake plus liquid gelatin can turn into a slightly confused sponge situation.
Prepare the strawberry gelatin
In a mixing bowl, whisk together the strawberry gelatin powder and boiling water until completely dissolved and smooth.
Pour the gelatin over the cake
Slowly pour the strawberry gelatin mixture evenly over the cooled cake, allowing it to seep into all the holes.
Chill until set
Transfer the cake to the refrigerator and chill for at least 1 hour, or until the gelatin is fully set inside the cake.
Add the whipped topping
Spread the thawed whipped topping evenly over the entire surface of the cake using an offset spatula or spoon.
Garnish and serve
Top with fresh sliced strawberries just before serving for extra color and flavor.
Slice and enjoy
Cut into squares and serve chilled. Cold straight from the fridge is the move here. Soft cake, creamy topping, bright strawberry flavor. Summer potluck behavior at its finest.