Blueberry Lemon Keto Butter Cake

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A whole new take on Gooey Butter Cake! This healthier keto blueberry lemon butter cake has a buttery crust and a rich cheesecake filling. It’s the perfect way to celebrate blueberry season.

As I do every year, I am trying to make the most of fresh summer produce. And this Keto Blueberry Lemon Butter Cake is off-the-charts delicious. I may have swooned a little at that first bite.

Gooey butter cake isn’t really cake in the regular sense of the word. It’s more akin to cheesecake bars, but with a buttery, cake-based crust. I have a classic Keto Gooey Butter Cake that pays homage to the original. I also have a keto pumpkin gooey butter cake that is extremely popular in the fall.

But the fresh blueberries were calling my name and I had to heed that call. And you will be so glad I did!

Why you will love this recipe

Really, this keto cake recipe is the ideal way to let your fresh berries shine this summer. The blueberry lemon flavor is so zingy and delicious!

One thing I did differently with this cake was cut it down in size. I didn’t want a dessert that served 16 or 18 people. So I modified it to fit an 8×8 inch pan and serve just 9 people. Nine lovely, large squares of gooey butter cake!

It’s also incredibly easy to make. The crust is based on my almond flour cake recipe, with fewer eggs. You just press it into the pan, whip up the keto cheesecake filling, stir in some fresh blueberries, and bake.

The results are unbelievably moist and rich, but they have only 4.6g of carbs per serving. That’s my kind of healthier dessert.

Ingredients you need

• Almond flour: Finely ground almond flour is a must for the best consistency.
• Coconut flour: A little coconut flour in the crust mixture helps offset the moisture in the egg and butter.
• Sweetener: I recommend an erythritol based sweetener for the crust, so it isn’t too soft. The filling can be made with any powdered sweetener you like best.
• Butter: It’s not called gooey butter cake for nothing!
• Lemon: This recipe uses both lemon zest and fresh lemon juice.
• Cream cheese: The filling is a little like cheesecake, except softer and gooier because you add some butter.
• Lemon extract: This is a great way to add lemon flavor without more carbs. (optional)
• Blueberries
• Kitchen staples: Egg, baking powder and salt

Step by Step Directions

1. Prepare the cake batter: In a large bowl, combine the almond flour, sweetener, coconut flour, baking powder, and salt. Stir in the butter, egg, and lemon zest until well combined.

2. Press into the pan: Lightly grease an 8×8 glass or ceramic baking dish. Press the cake mixture into the bottom and partway up the sides of the prepared baking pan.

3. Beat the cream cheese: In another large bowl, beat the cream cheese and butter together until smooth. Beat in the sweetener until well combined.

4. Add the remaining ingredients: Beat in the egg, lemon zest, lemon juice, and lemon extract. Stir in the blueberries by hand.

5. Bake the cake: Pour the filling over the crust. Bake at 325ºF for 30 to 35 minutes, until the filling is mostly set, but the center still jiggles, and the edges are just golden brown. Remove and let cool, then dust with powdered sweetener and cut into bars.

Tips for Success 

The trick to getting a truly gooey butter cake is to not over-bake it. That means taking it out of the oven before the filling is completely set. The edges should be set but the center should still have a little jiggle to it.

I recommend a ceramic baking pan for this recipe so that it get over-baked. You can use metal, but I recommend lining with parchment paper to help protect this tender cake. It may bake a little faster so keep your eye on it.

You have multiple sweetener options for this recipe. I do find that allulose makes the crust too soft, so I recommend Swerve or another erythritol based sweetener. But the filling should work with allulose, erythritol, or any other sweetener. Do note that using allulose means it may take longer to set after you remove it from the oven.

Frequently Asked Questions

More delicious blueberry recipes

Blueberry Lemon Keto Gooey Butter Cake

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Course: Dessert

Cuisine: American

Keyword: blueberry lemon cake

Prep Time: 20 minutes minutes

Cook Time: 35 minutes minutes

Total Time: 55 minutes minutes

Servings: 9 servings

Calories: 261kcal

Ingredients

Filling

• 6 ounces cream cheese softened
• ¼ cup butter softened
• ⅓ cup Swerve Confectioners
• 1 large large egg, room temperature
• 2 teaspoon lemon zest
• 2 tablespoon lemon juice
• ½ teaspoon lemon extract (optional)
• ¾ cup blueberries
• Powdered Swerve for dusting

Instructions

• Preheat the oven to 325ºF and lightly grease an 8×8 glass or ceramic baking dish. (see Tip for Success).

• In a large bowl, combine the almond flour, sweetener, coconut flour, baking powder, and salt. Stir in the butter, egg, and lemon zest until well combined.

• Press this mixture into the bottom and partway up the sides of the prepared baking pan.

• In another large bowl, beat the cream cheese and butter together until smooth. Beat in the sweetener until well combined.

• Beat in the egg, lemon zest, lemon juice, and lemon extract. Stir in the blueberries by hand.

• Pour the filling over the crust. Bake 30 to 35 minutes, until the filling is mostly set, but the center still jiggles, and the edges are just golden brown. 

• Remove and let cool, then dust with powdered sweetener and cut into bars.

Notes

Storage Information: Store this cake in a covered container in the fridge for up to 5 days or in the freezer for several months. Wrap tightly for the freezer. 

Nutrition Facts

Blueberry Lemon Keto Gooey Butter Cake

Amount Per Serving (1 piece)

Calories 261
Calories from Fat 203

% Daily Value*

Fat 22.5g35%

Carbohydrates 6.8g2%

Fiber 2.2g9%

Protein 5.6g11%

* Percent Daily Values are based on a 2000 calorie diet.