Summer on this blog wouldn’t be complete without a bright lemon-and-blueberry dessert, and this Lemon Blueberry Poke Cake is the perfect way to celebrate warm-weather flavors. Light, tangy lemon and sweet-tart blueberries are infused directly into the cake, creating a moist, flavorful bite from edge to edge. A soft whipped topping adds airy texture and balances the fruit-forward sauce for a dessert that’s both refreshing and easy to make.
Every slice delivers the classic poke-cake experience: cake baked, poked, and soaked with a glossy blueberry sauce so the flavor sinks in. Because the topping is simple—just chilled whipped topping—this dessert is a great option when you want something that looks special but doesn’t require a long pastry skill set.
This recipe is ideal for potlucks, backyard meals, or any time you want a bright, summery dessert. Below you’ll find the full ingredient list and step-by-step directions, followed by helpful tips for baking, variations you can try, and storage guidance to keep your cake fresh.
- Cake
- 1 lemon cake mix
- 1 small box lemon pudding mix
- 1 cup sour cream
- 3/4 cup oil
- 1/2 cup sugar
- 4 eggs
- Topping
- 12 ounce whipped topping (such as Cool Whip), thawed to room temperature
- Blueberry Sauce
- 1 1/2 cups water
- 1 1/2 cups sugar
- 3 tablespoons cornstarch
- 2 cups fresh blueberries
- 1 tablespoon butter
- Preheat the oven to 350°F (175°C). Prepare a 9×13-inch baking dish by spraying it lightly with nonstick spray.
- In a large mixing bowl, combine the lemon cake mix, lemon pudding mix, sour cream, oil, sugar, and eggs. Beat the mixture for about 3 minutes until smooth and well blended.
- Pour the batter into the prepared pan and spread it evenly. Bake for 35 to 45 minutes, or until a toothpick inserted near the center comes out clean. Remove the cake from the oven and let it cool for 10 minutes.
- In a medium saucepan, whisk together the water, sugar, and cornstarch. Bring the mixture to a boil over medium heat, stirring frequently, until it thickens and becomes clear.
- Add the fresh blueberries and the tablespoon of butter. Cook for about 7 minutes, gently smashing a few berries if you prefer a slightly thicker sauce with some jammy texture. Remove from heat and let the sauce cool while the cake finishes.
- When the cake has cooled for 10 minutes, use the handle of a wooden spoon or a similar tool to poke holes evenly across the surface of the cake. Pour the cooled blueberry sauce over the cake, allowing it to seep into the holes so the cake soaks up the flavor.
- Refrigerate the cake until it is completely cool and the sauce has set—this helps the cake absorb the sauce and keeps the whipped topping firm when you add it.
- Spread the thawed whipped topping evenly over the chilled cake. Cover and refrigerate until ready to serve.
Tips and Serving Suggestions:
– Use fresh blueberries when possible for the best flavor; frozen blueberries can work, but thaw and drain them slightly first to avoid excess water.
– For a brighter lemon profile, add 1 to 2 teaspoons of fresh lemon zest to the cake batter or stir a little lemon juice into the whipped topping before spreading.
– If you like a firmer sauce, increase the cornstarch by 1/2 teaspoon. For a looser, spoonable sauce, reduce the cornstarch slightly.
– Allowing the cake to chill for several hours or overnight improves the texture, as the blueberries fully infuse the cake.
– Garnish just before serving with a few fresh blueberries, lemon zest, or a thin lemon slice for an attractive finish.
Storage and Make-Ahead:
– Store the assembled cake, covered, in the refrigerator for 3 to 4 days. Because it contains dairy and fruit, keep it chilled until serving.
– This cake is easy to make a day ahead: bake, add the sauce, chill, and then spread the whipped topping just before serving to keep the topping looking fresh.
Variations:
– Swap the whipped topping for lightly sweetened whipped cream for a fresher taste.
– Add a handful of lemon poppy seeds to the batter for a subtle crunch and visual interest.
Enjoy!