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Keto Egg Fast Lemon Bars

Low Carb egg fast lemon cheesecake barsKeto Egg Fast Lemon Bars

This fantastic cheesecake type recipe for Egg Fast Lemon bars originally came from a couple of group members in the Egg Fast Stall Breaker facebook support group.

I tried it and I loved it but my big issue with it was the egg to fat ratio.  For followers of the Egg Fast, this is important because it’s so easy to lose track of how many eggs vs how many fats, which is a vital component of the Egg Fast.

Also, the original recipe called for 1 oz cheese for each egg and I think people get better results on this fast with less cheese.

So I have tweaked the recipe to end up with not only using one half the amount of cheese, but also keeping with the 1 egg to 1 tbsp fat ratio.

Read What is the Egg Fast here.

To help with tracking eggs and fats get your 5 Day Egg Fast tracker here

Tools and Ingredients Needed to Make Keto Egg Fast Lemon Bars

Please note: The blue links are affiliate links meaning I will earn a small commission if you buy the item.  This won’t affect the price you pay and it does help me keep this blog alive.  I appreciate how much my readers support me in this way!

  • A large blender like a Vitamix or Blendtec ( a Magic Bullet will be too small for this recipe). This Ninja blender is rated ‘Best
    Keto Egg Fast Lemon Bars in the pan

    Right out of the oven. These will deflate to a dense cheesecake light texture!

    Value’ on Amazon.

  • Either a 9 x 9 inch pan or a 12 cavity muffin pan or these super cute single serving loaf pans.
  • Eggs
  • Butter
  • Mayonnaise
  • Cream Cheese
  • True Lemon Crystals (be sure to get the package that says 0 carbs, 0 sugar)
  • Granulated erythritol such as So Nourished sweetener

Changing up the Egg Fast Lemon Bars

Ok, there’s lots of things you can do here!  Check out the Lime Bars I made for St. Patrick’s Day!

Egg Fast Lime Bars St. Patrick's Day

Lime packets + green food color for St. Patrick’s Day!


Here are a few variation ideas to change the flavor:

  • The True Lemon Crystals now come in other flavors like Lime and Orange
  • Omit the sweetener and use one of the allowed Skinny Mix sugar free drink mixes to flavor the bars. My favorite is Caramel Pecan!
  • Instead of True Lemon crystals make use of extracts like Maple, Rum, Banana, Coconut, etc.  I’m very intrigued by these flavor sets but they don’t ship to Canada.
  • You can make this completely dairy free by substituting coconut oil for the butter and 1 tbsp mayonnaise for each ounce of cream cheese.

Have fun and see what variations you can come up with!


Printable Recipe Card for Egg Fast Lemon Bars

Yield: 6 Servings

Keto Egg Fast Lemon Bars

Keto Egg Fast Lemon Bars

Keto Egg Fast Lemon Bars are a nice textural change for egg fasters!


  • 6 Eggs
  • 3 oz cream cheese
  • 3 Tbsp butter
  • 3 Tbsp mayonnaise
  • 4 packets True Lemon Crystals
  • 3 Tbsp Erythritol/stevia blend (or sweetener of choice)


  1. Preheat oven to 350
  2. Put all ingredients into a large blender
  3. Blend until frothy
  4. If using a regular pan, line with parchment. If using muffin tins, use cupcake liners.
  5. Pour mixture into 9 inch pan or 12 muffin pan or 12 mini loaves
  6. Bake 20 minutes for muffins or mini loaves and 30 minutes for 9 inch pan.
  7. Cool and cut into 12 equal portions (if using pan)


I like these cold from the fridge, they taste a little like cheesecake!

On the Egg fast: 2 squares, 2 muffins or 2 mini loaves = 1 egg, 1 tbsp fat and 1/2 ounce cheese

Nutrition Information:



Serving Size:

2 bars

Amount Per Serving:Calories: 238 Total Fat: 21g Saturated Fat: 9g Trans Fat: 0g Unsaturated Fat: 10g Cholesterol: 218mg Sodium: 206mg Carbohydrates: 7g Fiber: 2g Sugar: 3g Protein: 8g
Nutritional information for the recipe is provided as a courtesy and is approximate only. We cannot guarantee the accuracy of the nutritional information given for any recipe on this site. Erythritol carbs are not included in carb counts as it has been shown not to impact blood sugar.

Here are some other Egg Fast recipes for you to try!

More Egg Fast Recipes to Try

Here are some basic egg fast recipes for you to try out!

Egg Fast Lemon Cheesecake Fat Bombs

Instant Pot Sous Vide Egg Bites for the Egg Fast!

Keto Mini Egg Fast Pizzas

Best Low Carb Waffles Recipe

Egg Fast Recipe: Egg Puffs

Keto Matcha Tea Fat Bomb for Egg Fast and Shakes!

Egg Fast Recipe: Lemon Filled Danish

Keto Cloud Bread with Dairy Free and Egg Fast Options

Keto Egg Fast Lemon Bars

Mascarpone Hazelnut Low Carb Cheesecake Muffins

Easy Avocado Oil Mayonnaise Recipe So Delicious You Will Want it on Everything!

Egg Fast Approved!

The Ultimate Guide to the Keto Egg Shake

Egg Fast Menu - Day 1

Keto Egg Fast Diet Plan Menu - Day 2

Keto Egg Fast Diet Plan Menu - Day 3

How to Transition from Egg Fast back to Keto LCHF

How to go back to Keto and NOT gain back the weight.

Save these Egg Fast Lemon Bars to Pinterest!

Keto Egg Fast Lemon Bars - These taste like cheesecake!

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6 Responses to Keto Egg Fast Lemon Bars

  1. Cindy Cowles says:

    How long can you store these in the fridge if you wanted to make enough (in different flavors) for a few days?

    • KetoWoman says:

      I would say up to a week. It’s similar to how long you could keep a cheesecake in the fridge.

  2. Claudia says:

    Why is cream cheese aloud on an egg fast?

    • KetoWoman says:

      The protocol calls for up to 4 ounces of cheese daily and so cream cheese is a cheese. It is optional so if it goes against your own goals or desires then it can be left out.

  3. Aiko says:

    How would you adapt the recipe for Lemon extract? If the recipe calls for 4 packets of lemon crystals, how much does this equate to for amount of lemon extract? I would love to make this! Thanks!

    • KetoWoman says:

      Lemon extract can be quite strong so here’s what I would do. Put in 1/2 tsp, mix it up and then dip your finger in and taste. If it’s not lemony enough then add more. I’ve made it with lemon extract before but I don’t remember exactly how much I used so I don’t want to say too much and then have you not like it! Good luck with it!

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