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The Ultimate Keto Lemon Bars

by Lucie
Keto Lemon Bars

Keto Lemon Bars are a delightful and tangy treat that adheres to low-carb guidelines. Here’s a simple recipe to create these zesty, juicy and guilt-free delights!

The keto lemon bars are with immediate effect my number one keto dessert! They are soft, fresh, juicy, and with only 4g carbs per bar and five ingredients needed making the best ketogenic treat ever! The original recipe isn’t mine, but I edited a little bit according to my taste. (The original was way too sweet). Also, I’ve added the Milk Thistle flour. You don’t have to buy it extra for this recipe; it will perfectly work without it. But I love to add it into all different mixtures because it doesn’t affect the taste and it brings so many health benefits.

Milk Thistle also is known as Holy Thistle is a flowering herb related to the daisy and ragweed family. Silymarin, the main active ingredient in milk thistle is both an anti-inflammatory and antioxidant. Some studies show that milk thistle may have a positive effect on damaged livers. (There are also other studies which show no improvement in liver function). But I say: If it doesn’t help, it won’t hurt! Medical research found out that milk thistle, combined with traditional treatment, can improve diabetes. Studies have also shown that people with type 2 diabetes decreased in blood sugar levels and had an improvement in cholesterol.

Most of you are now maybe a little confused! Asking yourself if lemons are recommended on the low carb diet. We read all over that the only allowed fruits are the berries! But lemon juice is a perfect match to any diet, including the ketogenic one. Lemons are significantly involved in maintaining the healthy pH balance of the body, thanks to its alkaline components. Specific proteins from the food we eat produce uric acid, which is the culprit for painful gout. By drinking lemon juice, you keep uric acid at a reasonable level – keeping your kidneys, liver, and your whole body healthy.

A whole lemon usually contains about three tablespoons worth of a juice. That is about 3,15 gram of carbs and 0,15 gram of fiber. This makes lemon juice to a low carbohydrate food choice, and that means you can use it without a shred of guilt!

Keto Lemon Bars Extra Tips

If you are a sweet lover, you can increase the sweetener amount. In the original recipe, they add a whole cup of sweetener. But I assure you the four tbsp in this modified version is enough. (It was sweet enough even for my hubby who could eat sugar directly from the bag). The baking time can vary according to the oven you have, and as the cooking time is rapid don’t leave your keto lemon bars unattended! You will realize they are ready when they start to get lightly brown on the surface.

Keto Lemon Bars

The Ultimate Keto Lemon Bars

Serves: 8 pieces Prep Time: Cooking Time:
Nutrition facts: 200 calories 20 grams fat
Rating: 5.0/5
( 1 voted )


160g/5.6oz butter
1 3/4 cups almond flour
2 tbsp Milk Thistle flour
4 tbsp erythritol
3 lemons
3 eggs


  1. Melt butter and mix with 1 cup almond flour, 2 tbsp erythritol, and a pinch of salt. Press evenly into an 8×8 baking dish lined with parchment paper.
  2. Bake for 10 minutes at 160°C(320 °F).
  3. Cool for 15 minutes.
  4. Meanwhile, into a mixing bowl, add peel from one lemon, juice all the lemons, add the eggs, 2 tbsp erythritol, 3/4 cup almond flour & pinch of salt and combine.
  5. Pour the filling onto the crust & bake for 15-20 minutes.
  6. Sprinkle with powdered erythritol.

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