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+ servings
Stack of 3 Keto Lemon Bars on a white square plate

Keto Lemon Bars

These Keto Lemon Bars are so easy to make with just 6 ingredients and the perfect sugar free dessert for spring. This low carb lemon bar recipe is refreshingly sweet with a luscious lemon filling topped over an almond flour crust.

Course Dessert
Cuisine American
Keyword keto lemon bars, lemon desserts, low carb dessert, spring dessert, summer dessert recipes
Prep Time 10 minutes
Cook Time 29 minutes
Chill Time 2 hours
Total Time 39 minutes
Servings 16 squares
Calories 83 kcal
Author Kelly




  • 4 large eggs
  • 1/2 cup powdered monk fruit sweetener OR 1/2 cup Lakanto sugar-free maple syrup
  • 1 tablespoons sifted coconut flour (can sub with 2 tablespoons tapioca flour or arrowroot flour if not keto)
  • 2/3 cup lemon juice (about 4 lemons)
  • 2 teaspoons lemon zest (about 1 lemon)


  1. Preheat the oven to 350° and line an 8x8 metal square baking pan (do not use glass or the crust will burn) with parchment paper leaving a slight overhang. Set aside.

  2. Make the crust:

    In a large bowl, combine the coconut oil, sweetener, vanilla and optional lemon zest until smooth. Sift in the almond flour and coconut flour and mix until dough forms and comes together.

    Press into the bottom of the lined pan and bake for 11-12 minutes or until golden. Remove from the oven and allow to cool slightly, no longer than 1-2 minutes.

    Top view of baked low carb pecan pie bars crust in a 8x8 square baking pan on a grey background
  3. Make the filling:

    In a medium-sized bowl, whisk the eggs with the sweetener until smooth. Add the lemon juice and lemon zest and whisk again. Add the coconut flour and continue mixing well until smooth and no lumps appear.

    Pour filling over the slightly cooled crust and lower the oven temperature to 325F. Bake for 20-25 minutes, or until filling is just set and no longer jiggles. Be careful not  to overbake. Remove the pan from the oven and allow to cool in the pan for an hour, then chill in the fridge for another 2-3 before serving, to firm up. 

  4. Use a sharp knife to cut into bars then dust with some powdered sugar, some lemon zest and garnish one or two bars with a lemon slice. 

    4 Keto Low Carb Lemon Bars on a brown square plate

Recipe Video

Recipe Notes

Use a very sharp knife and wipe clean with a paper towel after each cut.

Leftovers keep well in the refrigerator for up to 5 days.

Bars can be made ahead of time 1-3 days in advance and store covered tightly in the refrigerator until ready to serve. Bars can be frozen for up to 3 months. Thaw overnight in the refrigerator before serving.

Nutrition Facts
Keto Lemon Bars
Amount Per Serving (1 square)
Calories 83 Calories from Fat 54
% Daily Value*
Fat 6g9%
Carbohydrates 4g1%
Fiber 1g4%
Protein 2g4%
* Nutrition facts are provided as a courtesy using the WPRM recipe calculator. It is best to make your own calculations to ensure accuracy. We expressly disclaim any and all liability of any kind with respect to any act or omission wholly or in part in reliance on anything contained in this website. Percent Daily Values are based on a 2000 calorie diet.