Best Easy Sugar Free Low Carb Keto Coconut Lime Bars
Keto Sugar Free Coconut Lime Bars have a buttery coconut flour crust, and a delicious, tart coconut lime filling! Just 4 total carbs per serving or 2 g net carb count! Perfect for those on a keto diet or anyone looking for a sugar-free sweet treat low in carbs that won’t spike blood sugar when you want to curb your sweet tooth!
Keto Coconut Lime Bars Recipe
Imagine a dessert that tastes like a tropical escape, bright with citrus and rich with coconut, yet fits perfectly into your low-carb lifestyle.
These sugar-free coconut lime bars are exactly that โ a little square of sunshine that won’t derail your healthy eating goals. Forget those overly sweet, guilt-inducing treats; it’s time for something both delicious and mindful.
Finding truly satisfying low-carb desserts can be a challenge. Often, they sacrifice flavor or texture in the quest for fewer carbs and no sugar. But what if you could have a vibrant, zesty bar with a delightful crust and a creamy, tangy filling?
This recipe delivers on all fronts, proving that you don’t need sugar to create something truly special. It’s about smart ingredient swaps and balancing flavors to achieve that perfect sweet-tart harmony.

Keto Key Lime Bars
Every great bar starts with a solid base. For these coconut lime bars, we’re using a blend of coconut flour and either sesame or almond flour to create a tender, flavorful shortbread crust that complements the filling without being overly dense.
Combine the dry ingredients โ the flours, your chosen sweetener, and a touch of sea salt. Then, cut in the coconut oil until the mixture is crumbly.
This creates that perfect shortbread-like texture. Press this firmly into your prepared baking dish; parchment paper is your friend here for easy removal later. A quick bake in a preheated oven sets the stage for the luscious filling.
While the crust bakes, whip up the star of the show: the vibrant lime filling. This is where the tropical magic truly happens.
You’ll whisk together eggs, fresh lime juice, and plenty of lime zest for that essential bright flavor. Add your sweetener of choice and a hint of coconut stevia to enhance that tropical note.
Once the crust is ready, pour this smooth, zesty mixture over the warm base. A sprinkle of unsweetened coconut flakes on top adds another layer of texture and flavor.
Sugar Free Keto Lime Bars
You can change this fantastic tropical dessert into keto lemon bars by simply swapping the fresh limes and using lemon juice and zest instead.
Simple Ingredients
sesame flour or almond
Swerve confectioners sweetener
coconut oil room temperature or melted butter
Large eggs
Key Lime juice or lemon juice
Lime zest or lemon zest
Unsweetened shredded coconut flakes
Low Carb Sweetener Options
If you don’t have coconut stevia or prefer to use another low carb sweetener, no problem. Use myย Sweetener Guide and Conversion Chartย to help you decide how much of another sweetener to use to replace stevia.ย
I prefer to not use any sugar alcohols as I find they tend to crystalize in the fridge.
These days I’m enjoying using a combination sweetener that combines Monk Fruit and Allulose and I find it perfect in the amount of sweetness for keto baked desserts.

How to Store Keto Coconut Lime Bars
Allowing the bars to cool properly is crucial for them to set completely. Once cooled, lift them out using the parchment paper and slice into squares. These bars are best kept refrigerated, perfect for a cool, refreshing treat any time.
Once cooled, and sliced into servings you can place each in a cupcake liner or use parchment paper and layer into an airtight container to place in the fridge. Best stored in the fridge for up to 5 days. You can also freeze for up to one month.
Making recipes like this one might bring you a little piece of the tropics in your mind. In just one bite of these sweet and tart bars you will be transported to tropical place.
It’s a little like a shortbread cookie crust on the bottom with a soft top layer.
A match made in heaven.
That’s all we want on a low carb diet isn’t it?
More Low Carb Keto Delicious Desserts
Starbucks Copycat Lime Refresher
Sugar Free Low Carb Coconut Lime Bars
Sugar Free Coconut Lime Bars
Ingredients
Crust Ingredients
- 3/4 cup coconut flour
- 1/4 cup sesame flour or almond
- 1 1/4 cup Monk Fruit Allulose confectioners sweetener divided
- 1/4 teaspoon sea salt
- 1/4 cup coconut oil room temperature
Key Lime Filling
- 4 eggs
- 1/2 cup lime juice from fresh key limes or regular limes
- 1 tablespoon lime zest
- 1/2 teaspoon coconut stevia
- 1/4 cup unsweetened coconut flakes
Instructions
- Preheat oven to 350 degrees.
- Line an 8 by 8 baking dish with parchment paper.
- Whisk the coconut flour, sesame flour, 1/4 cup sweetener together and salt in a large bowl.
- Cut the coconut oil into the dry ingredients with two butter knifes or use food processor and pulse until combined.
- Press this mixture onto the parchment paper in an even layer by pressing down as evenly as you can with your hand or the flat bottom of a cup.
- Bake for 10 minutes until golden brown.
- While the crust is cooking, in a medium bowl, beat the eggs, lime juice, zest, remaining 1 cup sweetener and coconut stevia.
- Once the crust is done, remove from oven and pour this egg mixture onto the buttery crust.
- Sprinkle coconut flakes evenly over the top and bake for 12-15 minutes or until the center is set.
- Allow to cool for 10 minutes then remove by lifting the ends of the parchment paper and place onto a cutting board.
- Slice into bars and you can enjoy immediately or give them some chill time in the fridge before serving if you prefer.ย
- Best if kept refrigerated.
I substituted equal monk fruit for swerve; too sweet and grainy. Should I have used less and maybe powdered swerve?
Yes if it was granulated monk fruit which also has erythritol that would be the reason for the grainy texture. Yes confectioners Swerve would be better.
Can I double recipe for the sugar free coconut lime bars and use a 13×9?
Sure
What would suggest as a substitute for coconut stevia?
You can use any sweetener you like. This is my conversion chart with other options; https://www.sugarfreemom.com/recipes/natural-sugar-free-low-carb-sweeteners-guide-conversion-chart/
Hi can I use honey instead of sweetner stevia in this recipe?
You could but that will increase your calories and carbs.
These were very good. Will make them again. I did use Key lime juice because I had it. Just very good (:
If like to use monk fruit, but not sure about how much to add, please advise.
Thank you,
If it’s granular monk fruit you can use about 1/2 cup, it is much sweeter than Swerve.
This is so so good! I didnโt have coconut stevia and just added a bit of coconut extract. Also used powdered monkfruit- probably 3/4c in the batter. When I pulled them out, I melted some SF white chocolate chips to melt over the top to spread when they melted. Sliced up and squeezed fresh lime on the bar I cut. Awesome recipe thank you!
Thanks for sharing!
Reality check? The lime coconut bars say 16 bars per batch out of an 8 x 8 pan. Is that correct?
Do you think i could use egg substitute in this? Allergy unfortunately.
I’ve swapped up to 3 eggs with a gelatin egg sub but have tried more than that for a bread recipe without success. But since this is a bar and not bread I think 4 gelatin or flax egg sub would work. Please let me know if you do try it.
Live in U.K and unable purchase Swerve in shops. Ordered from Amazon but so expensive ๐
I love the bars, however as the Swerve is so expensive, it will cost a fortune to keep making!
With regards to Xylitol or Erithrithol, would the same amount be required?
This recipe look delicious, but I don’t have any coconut oil, is there any other oil or butter I can replace it with? What would you recommend for this specific recipe? Thank you very much in advance!
I think cold butter will work in place of the coconut oil.
Brenda, I have known people who DID move their home to a new site…donโt know how the walls didnโt crack, but they didnโt. We are in the same process of โright sizingโ after retirement and moving to another state. Itโs amazythe stuff we have hung onto!! ?
These were amazing! Easy to make. I used Xylitol instead of swerve (it’s what I had). Second time I made them, I replaced the lime with lemon… delicious!
I can’t wait to try these. I love lime and coconut so these sound great to me!
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