If you love zesty, citrusy desserts but want to keep things low-carb and sugar-free, these Keto Lemon Bars are a must-try! With a buttery almond flour crust and a tangy, refreshing lemon filling, they are the perfect balance of sweet and tart. Plus, they’re gluten-free, grain-free, and keto-friendly, making them a great treat for anyone following a low-carb diet or just looking for a healthier dessert option.
These bars are easy to make, perfect for meal prep, and great for snacking, parties, or sharing with friends and family—even those who don’t follow keto will love them!
Chilled Keto Lemon Bars Ready to Serve

These keto lemon bars are ready to brighten up your dessert table! Each piece is perfectly chilled, featuring a buttery crust topped with a zesty lemon filling. They’re not just low-carb; they’re also a treat everyone will enjoy!
Ingredients
For the Almond Flour Crust:
- 1 ½ cups almond flour
- ¼ cup butter (or coconut oil for dairy-free option), melted
- ¼ cup powdered erythritol or monk fruit sweetener
- 1 teaspoon vanilla extract
- A pinch of salt
For the Lemon Filling:
- ½ cup fresh lemon juice (about 2-3 lemons)
- 1 tablespoon lemon zest
- 3 large eggs
- ½ cup powdered keto-friendly sweetener (erythritol or monk fruit)
- 1 tablespoon coconut flour (to thicken)
- A pinch of salt
Instructions
1. Prepare the Crust
- Preheat your oven to 350°F (175°C) and line an 8×8-inch baking dish with parchment paper.
- In a bowl, mix almond flour, sweetener, melted butter (or coconut oil), vanilla extract, and salt until a dough forms.
- Press the dough evenly into the prepared baking dish and bake for 10-12 minutes, or until the edges are lightly golden.
- Remove from the oven and let it cool slightly while preparing the filling.
Almond Flour Crust Preparation

Making the almond flour crust is quick and easy! Start by mixing almond flour, melted butter, sweetener, vanilla, and salt in a bowl until it forms a dough. Press the dough into your baking dish, bake, and you’re ready for the delicious lemon filling!
2. Make the Lemon Filling
- In a mixing bowl, whisk together the eggs, lemon juice, lemon zest, sweetener, and salt until smooth.
- Add the coconut flour and mix until fully incorporated. Let the mixture sit for a couple of minutes to allow the coconut flour to absorb some moisture.
- Pour the lemon filling over the pre-baked crust, spreading it evenly.

3. Bake & Chill
- Return the baking dish to the oven and bake for 18-20 minutes, or until the filling is set but still slightly jiggly in the center.
- Let the bars cool at room temperature, then place them in the refrigerator for at least 2 hours to fully set.
4. Slice & Serve
Slice into 12 squares and enjoy your refreshing, low-carb treat!
Once fully chilled, dust the top with a little powdered erythritol for a classic lemon bar look.
Tips & Variations
🍋 Make it Dairy-Free: Use coconut oil instead of butter for a dairy-free version.
🥥 Extra Creaminess: Add 2 tablespoons of unsweetened coconut milk to the lemon filling for a richer texture.
🌿 Flavor Boost: Enhance the flavor by adding ½ teaspoon of vanilla or almond extract.
🥄 More Texture: Sprinkle shredded coconut or chopped nuts into the crust for extra crunch.
Nutritional Information (Per Serving – Approximate)
- Calories: ~120
- Net Carbs: ~2g
- Fat: ~10g
- Protein: ~3g
These keto lemon bars are the ultimate low-carb, sugar-free dessert, offering the perfect balance of buttery richness and zesty lemon flavor. Whether you’re following a keto lifestyle or just want a healthier treat, these bars are light, refreshing, and easy to make. Enjoy them as a snack, meal prep dessert, or party treat—and don’t forget to share your keto lemon bar creations on Pinterest and social media! 🍋✨