These soft and creamy keto lemon bars absolutely melt in your mouth! If you like lemon desserts, this is the recipe for you.
Easy keto lemon bar recipe
With just six ingredients and no sugar or flour required, you will fall completely in love with the smooth and melt-in-your-mouth texture of these low carb lemon squares.
The sweet lemon dessert reminds me of something between a lemon bar and a lemon cheesecake, which basically makes them impossible to resist.
I’ve already made the recipe at least a dozen times, and each batch almost instantly disappears as soon as I set it down on the table!
Also try the popular Keto Brownies
Sugar free lemon squares
The keto lemon squares are great for company or for an easy weeknight dessert. And they can easily be made without sugar.
Just blend everything together, layer the lemony mixture into a pan, and let the oven do all the hard work.
With no eggs or dairy, and flourless, sugar free, gluten free, low carb, paleo, and vegan options, these classic homemade keto lemon bars are sure to be a hit with everyone who tries them.
Note: If you are not on a low carb or keto diet and want to use regular sugar for the lemon bars, there is a non keto version of the recipe as well.
Still craving lemon? Make Keto Lemon Bread or Lemon Sorbet
Keto lemon bar recipe video
Above, watch the step by step video.
How to make keto lemon bars
Step One: Start by reading through the recipe and gathering all ingredients. Preheat your oven to 350 degrees Fahrenheit.
Step Two: If you are using a crust, combine all of the crust ingredients in a mixing bowl. Then smooth the dough evenly into a parchment lined or well greased eight inch baking pan.
Step Three: Combine the cream cheese, yogurt, lemon juice and zest, powdered xylitol or powdered sugar, almond flour or cornstarch, and optional turmeric in a blender just until smooth.
(Beating too much can cause cracking due to beating in added air.)
Step Four: Pour the smooth lemon filling into the prepared baking pan. Cook on the oven’s middle rack for twenty five minutes.
Step Five: Once time is up, leave the oven door completely closed and turn off the heat. Let the pan sit in the closed oven for eight minutes, during which time it will slowly cool down.
Step Six: Remove the still underdone lemon bars and set them on the counter to continue cooling gradually.
Storing leftovers
Once cool, refrigerate the entire pan for a few hours or overnight. During this time, the squares will firm up considerably.
Leftover lemon squares should stay good in the refrigerator for up to five days. Or slice and freeze them in an airtight covered container for up to about four months.
Make sure to thaw the frozen bars fully before serving them to guests.
Readers also like these Coconut Flour Cookies
Katie’s lemon square tips and tricks
In general, high heat, over beating, and sudden changes in temperature can all cause cracking in cheesecake square recipes.
Thankfully, I’ve picked up a few great baking tricks over the years to make cracked bars a thing of the past.
The best of these tricks is to fill a baking pan about two thirds of the way with water and place it on the lower oven rack. (You will bake the cheesecake bars on the middle rack.) The water adds moisture to the oven so that your low carb lemon bars will not dry out as they bake.
Bring the cream cheese to room temperature before starting. This step enables you to not need to beat it as long to get the batter smooth. And less beating means fewer air bubbles that can form and burst during the cooking process.
Finally, avoid rapid temperature changes by letting the bars cool. First cool them for a few minutes in a turned off oven for five to ten minutes. Then continue to cool on the counter before refrigerating until firm.
Keto lemon bar ingredients
You will need cream cheese, plain yogurt, lemon juice, lemon zest, powdered erythritol or xylitol or sugar, almond flour (or cornstarch for a non keto lemon bar), and an optional pinch of powdered turmeric or natural yellow food coloring for the smooth lemon filling.
Make the bars crustless, or use the simple keto crust below that calls for only almond meal and butter or coconut oil. It’s like a keto version of a graham cracker crust.
Even more than the lemon juice, it is the lemon zest that gives these fancy dessert bars their bold lemon flavor. So do be sure to include this ingredient.
To make your own lemon zest, simply wash a lemon and use a zester or grater to shred the peel. If you don’t have one of these gadgets, use a vegetable peeler. Then finely dice the skin with a sharp knife.
For keto vegan lemon bars, use vegan cream cheese and dairy free yogurt.
Or if you want to change up the flavor, try substituting vanilla, strawberry, raspberry, or even blueberry yogurt. Sugar free lemon blueberry bars? Yes, please!
Leftover lemon? Use it up in this Cauliflower Alfredo Sauce
If desired, top the recipe with sliced lemons and Coconut Whipped Cream.
Keto Lemon Bars
Ingredients
Optional Keto Crust
- 1 1/2 cup almond flour
- 4 tbsp melted butter or coconut oil
Instructions
- *The lemon zest is important, so be sure to include it. I like to use a water bath (see above for explanation) but it is not required. To make keto lemon bars, preheat the oven to 350 F. Combine the crust ingredients, if using. Press into a parchment lined 8×8 pan. Meanwhile, combine remaining ingredients in a blender or food processor until smooth. (Don't over-beat, which could cause cracking.) Pour over the crust, and bake 25 minutes. Do not open the oven door, but turn off heat and let sit 8 minutes. Take out the still undercooked bars and let cool completely, then refrigerate a few hours until firm. Leftover bars can be refrigerated or frozen.View Nutrition Facts
Video
Notes
More Healthy Low Carb Desserts
OOOHHHH! Katie! I needed a lemon dessert! These are to die for! Are you in quarantne?
Yoooo katie! I’m from HI and do u have a lemon muffin/cupcake recipie?
This one can be done as cupcakes or muffins 🙂
https://lett-trim.today/vegan-lemon-bread-recipe/%3C/a%3E%3C/p%3E
Yoo! Thanks man!
Hi! No it can not D: i tried your recipe several times and the loaf always turns out undercooked i feel like its because of the yogurt i dont know x.x i asked you guys for some Tips on how to make sure it does not turn out undercooked on the inside and almost Black on the outside O.O i used coconut oil and skyr instead of greek yogurt i rly hope that this change does not cause the Problem and i used stevia and in General less sugar x.x i rly hope you guys answer me this time lol
If you substituted stevia and cut out the sugar in her recipe then it sounds like you didn’t make her recipe so how is it a surprise it turned out different than if you’d followed Katie’s recipe?
So this is what it’s like to be addicted to food p*$/ 🤤🤤🤤
is that a sex joke?
I made these last night, with orange instead of lemon and oh my they were even better than the pictures make them look! Thank you for this recipe 🙂
Do you think these could be cooked in individual silicone cupcake molds? Like you would for mini-cheesecakes? I can’t normally trust myself with a whole pan of anything!
Hi, do you mean like this sort of thing? https://lett-trim.today/cheesecake-cupcakes/%3C/a%3E%3Cbr /> Or you can also slice and freeze the lemon squares and then just thaw one at a time too.
I made these using regular cream cheese and Greek yogurt. (We don’t need to be dairy free) So yummy and lemony! This will be my go to recipe for baked cheesecake from now on. I can’t wait to try this with chocolate. Definitely a hit in my house
When is katie gonna post a new reicpie?
Good Lawd! These were AMAZING plus as an added bonus they fit in perfectly with the custom keto meal plan I have been following for the last 6 weeks.
I’ve made these twice now and they have a great flavor and nicely offset the cooling effect you sometimes get with artificial sweetener. Could I substitute an egg for the cornstarch? I’ve tried blending the corn starch straight in to the batter and mixing it first with the lemon juice, but both times I’ve ended up with significant lumps in the batter that don’t melt out all that well. Any suggestions? Thank you!
These were very good, and easy to make; the water bath idea and having the cream cheese at room temperature helped avoid cracking. I didn’t make the keto version; just used cane sugar.Almond flour crust was good too. I guessed a bit at the measurements of the vegan cream cheese and the yogurt because they don’t sell them in 12- ounce and 8- ounce sizes but it was fine; even substituted a couple ounces strawberry yogurt when I ran out of plain. Didn’t use whipped topping.
These were very good, and easy to make; the water bath idea and having the cream cheese at room temperature helped avoid cracking. I didn’t make the keto version; just used cane sugar.Almond flour crust was good too. I guessed a bit at the measurements of the vegan cream cheese and the yogurt because they don’t sell them in 12- ounce and 8- ounce sizes but it was fine; even substituted a couple ounces strawberry yogurt when I ran out of plain. Didn’t use whipped topping.