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Easy Lemon Blueberry Cheesecake Cake

This Lemon Blueberry Cheesecake Cake is a showstopper that's easier than it looks, combining layers of zesty lemon cake, creamy cheesecake, and sweet blueberry filling, all wrapped in tangy cream cheese frosting. It's fast(ish) thanks to a cake mix, easy to make, perfect for parties, and a definite crowd-pleaser.
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Course: Cake, Dessert
Cuisine: American
Ingredients Equipment Method Notes

Ingredients
  

For the Lemon Cake
  • 1 box lemon cake mix size listed on the box
  • ingredients listed on cake mix box usually eggs, oil, and water
  • 1 tablespoon lemon zest optional but recommended
For the Cheesecake Layer
  • 2 blocks cream cheese 8 oz each, softened
  • 1/2 cup granulated sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
For the Blueberry Filling
  • 1 cup fresh or frozen blueberries
  • 2 tablespoons sugar
  • 1 tablespoon lemon juice
  • 1 tablespoon cornstarch
  • 1 tablespoon water for cornstarch slurry
For the Frosting
  • 1 block cream cheese 8 oz, softened
  • 1/4 cup butter softened
  • 2 cups powdered sugar
  • 1 teaspoon vanilla extract
  • 1–2 tablespoons lemon juice or zest adjust to taste

Equipment

  • Springform pan
  • 8-inch round cake pan
  • Wire rack
  • Medium bowl
  • Small saucepan
  • Offset spatula or knife

Method
 

  1. Step 1: Prep the Cheesecake Layer: First things first, get that oven preheating to 325°F (165°C). Grab a springform pan or an 8-inch round cake pan. I like to line the bottom with parchment paper for easy removal – just trace the bottom of the pan and cut it out! Now, in a medium bowl, beat your softened cream cheese and sugar together until it's super smooth and no lumps are in sight. Beat in the eggs one at a time, mixing until just combined after each addition, then stir in the vanilla extract. Pour this lovely mixture into your prepared pan and pop it in the oven. Bake for about 30–35 minutes, or until the center looks set (it shouldn't wobble like liquid when you gently shake the pan). Let it cool completely on a wire rack, then tuck it into the refrigerator to chill thoroughly. A nice cold cheesecake layer is crucial for easy assembly!
  2. Step 2: Make the Lemon Cake: While the cheesecake is chilling, whip up your lemon cake! Follow the directions exactly as they are on the box, but here's my little pro tip: stir in that optional tablespoon of lemon zest. It really enhances the brightness! Pour the batter into two greased and floured 8-inch round cake pans. Bake according to package directions until a toothpick inserted into the center comes out clean. Let the cake layers cool in their pans for about 10-15 minutes before carefully turning them out onto wire racks to cool completely. Make sure they are totally cool before assembling!
  3. Step 3: Cook the Blueberry Filling: Time for that vibrant blueberry layer! In a small saucepan over medium heat, combine your blueberries (fresh or frozen!), sugar, and lemon juice. Stir occasionally as it heats up and the berries start to break down and bubble. Once it's bubbling nicely, give your cornstarch and water slurry a quick stir (make sure the cornstarch is fully dissolved!) and pour it into the saucepan. Stir continuously for about a minute or two until the mixture thickens into a glossy sauce. Remove from heat and let this cool completely. It will thicken more as it cools.
  4. Step 4: Make the Frosting: If you're opting for the frosting (and you should!), beat the softened cream cheese and softened butter together in a bowl until they are light and fluffy. Gradually add the powdered sugar, one cup at a time, beating until smooth. Stir in the vanilla extract. Now, add 1 to 2 tablespoons of lemon juice or zest, tasting as you go, until you get the perfect tangy lemon flavor you love. Beat until smooth and spreadable. If it feels too thick, add a tiny splash more lemon juice or milk; too thin, beat in a little more powdered sugar.
  5. Step 5: Assemble the Cake: The fun part! Place one cooled lemon cake layer onto your serving plate or cake stand. Spread the completely cooled blueberry filling evenly over the top of this layer, making sure it goes almost to the edges. Carefully lift your chilled cheesecake layer out of its pan and gently place it on top of the blueberry filling. Now, carefully place the second lemon cake layer on top of the cheesecake. Use an offset spatula or knife to spread the lemon cream cheese frosting all over the top and sides of the entire cake. Make it as rustic or as smooth as you like!
  6. Step 6: Chill and Serve: This step is important for clean slices! Pop the assembled cake back into the refrigerator for at least 1 hour to let everything set up nicely. This makes slicing so much easier. When you're ready to serve, use a sharp knife dipped in hot water and wiped dry between slices for the neatest presentation. Enjoy the oohs and aahs!

Notes

Substitutions & Additions: Use white or yellow cake mix if needed; swap blueberries for raspberries, mixed berries, or strawberries; an 8-inch regular pan can replace springform if lined with parchment; use a simple glaze or whipped cream instead of frosting; add crystalized ginger to frosting or extra lemon zest throughout for more zing.
Tips for Success: Ensure cream cheese and butter are properly softened; don't overbake the cheesecake, it will continue to set as it cools and chills; cool all components completely before assembling; parchment paper helps make cheesecake removal effortless; the final chilling step is important for clean slices; cake layers, cheesecake layer, and blueberry filling can be prepped ahead and stored in the fridge.
Storage: Store leftovers covered in the refrigerator for 3-4 days. Individual slices can be wrapped well and frozen for 2-3 months, thaw overnight in the refrigerator.