Keto Key Lime Bars
These delightful Keto Key Lime Pie Bars feature a shortbread cookie crust and a tangy lime bar layer topped with creamy lime whipped cream! At about 3 net carbs per bar, this is a sweet treat that fits within your keto diet!
Last summer my husband and I got hooked on my Keto Lemon Bars. We have always been a sucker for citrus, so much so that our wedding cake was lemon!
So naturally, this summer I wanted to create an equally delicious lime bar! These Keto Key Lime Pie Bars have everything that you love about traditional lemon bars like the shortbread crust and creamy citrus filling.
These are taken one step further with a lime whipped cream that is divine!
Ingredients for Key Lime Pie Bars
The ingredients list for these keto key lime bars is short and simple. Here’s what you’ll need for this summer keto dessert:
- Eggs
- Limes or Key limes
- Confectioners Sweetener (Keto-friendly such as monk fruit or Swerve)
- Coconut Flour
- Almond Flour
- Butter
- Heavy Cream
- Vanilla Extract
Are Limes Keto?
Yes! Lemons and limes are both keto-friendly.
How to Make Keto Key Lime Pie Bars
Here are the basic steps for making these low-carb key lime bars:
- For the Filling: Combine the eggs, sweetener, coconut flour, lime juice, and lime zest in a blender or food processor. Blend until completely smooth.
- Refrigerate for 20 minutes to allow the filling to thicken.
- For the Crust: Combine the melted butter, almond flour and sweetener in a small bowl and press into a foil lined 8×8-inch pan.
- Bake the crust until just slightly beginning to brown around the edges.
- Remove the crust and allow it to cool COMPLETELY
- Pour the filling over the cooled crust and bake until the center is set. Allow bars to cool completely.
- For the Lime Whipped Cream: Using a mixer, combine the heavy cream, lime juice, lime zest and sweetener and beat until stiff peeks form. Spread over the cooled lime bars.
- Place in the freezer for at least 20 minutes before slicing if you want to get nice clean slices.
How to Store Key Lime Pie Bars
I find these bars are best stored in the refrigerator and eaten within 4 days. However, you can also slice into serving sizes and freeze. Simply pull out a portion at a time and allow it to defrost for about 30 minutes. Stored in an air tight container, these will last about 3 months in the freezer.
How Many Net Carbs Are in Keto Key Lime Bars?
These delicious bars come to 3.1 net carbs if sliced into 12 equal pieces. I prefer to cut these small since you can see how thick they are. Even a small portion will satisfy your sweet tooth! However, if you prefer to cut them into 9 equal portions it will come to 4.2 net carbs per bar.
Tips for Making Keto Key Lime Bars
- Let the crust cool completely before adding the filling. If you don’t let the crust cool off first, the bars won’t set up properly.
- Likewise, the bars need to cool after being baked. If you try to top them with whipped cream while they’re still warm, the cream will melt.
- I like to pop the key lime pie bars in the freezer for about 20 minutes to make them easier to slice. That’s an optional step though!
Other Easy Keto Desserts:
Oftentimes people think a low-carb or keto diet means you have to give up all your favorite sweets. While it does mean you have to make some adjustments, you certainly don’t have to do without! I have been able to recreate most of my favorite pre-keto desserts to keto friendly options.
For example, this Keto French Silk Pie has all of the hallmarks of the classic, including a flakey crust, but only comes to about 5 net carbs a slice! Some other favorites include:
- Keto Cheesecake Brownies: Rich chocolate brownies laced with vanilla cheesecake swirl for about 2 net carbs each.
- The BEST Keto Lemon Cheesecake Bars: Shortbread crust, topped with a traditional lemon bar layer and then lemon cheesecake. It is so decadent you won’t believe they are keto.
- Easy No Bake Cookies: A keto spin on the classic no bake peanut butter cookies for about one net carb each.
- Keto Fruit Pizza: Seriously, fruit pizza! This tastes so much like the original it will blow your mind.
Get the Recipe: Keto Key Lime Bars
Ingredients
For the Crust
- 5 tablespoons butter
- 1 cup almond flour
- 2 tablespoons keto friendly confectioners sweetener*
Lime Bar Layer
- 4 large eggs
- 1/3 cup coconut flour
- 1/3 cup lime juice, 3-4 limes
- 2 tablespoons lime zest, 3-4 limes
- 3/4 cup keto friendly confectioners sweetener*
Lime Whipped Cream
- 1 cup heavy cream
- 1 tablespoon lime juice
- 1 teaspoon lime zest
- 1 teaspoon vanilla extract
- 2 tablespoons keto friendly confectioners sweetener*
Equipment
Instructions
For the Filling:
- Combine all filling ingredients in a blender or food processor. Blend for 30 seconds until completely smooth.
- Refrigerate for 20 minutes to allow the filling to thicken.
For the Crust:
- Preheat oven to 350 degrees F. Line an 8x8 pan with foil or parchment paper.
- Combine the melted butter, almond flour and sweetener in a small bowl and press into the foil lined pan.
- Pre-bake crust for 7 minutes, it should not be firm just slightly beginning to brown around the edges.
- Remove crust and allow it to cool COMPLETELY.
Bake the bars:
- Pour in filling and bake 18-20 minutes until the center is set. Allow bars to cool completely.
For the Lime Whipped Cream:
- Using a mixer combine the heavy cream, lime juice, lime zest and sweetener and beat until stiff peeks form.
- Spread over the cooled lime bars.
- Place in the freezer for at least 20 minutes before slicing if you want to get nice clean slices.
Your recipe states coconut flour for the filling but in the instructions it’s noted as coconut milk, which do we use?
Hi Elizabeth, there is no coconut milk used in this recipe, it is coconut flour. I checked the recipe card and it is correct.
Husband is allergic to coconut so unable to use coconut flour. Can I substitute almond flour?
Hi Carlene, I’ve only made these as written.
I added 8 oz cream cheese to filling. It is amazing!
Linda, thanks for the suggestion. Adding the block of cream cheese really punched up the texture and flavor. They almost tasted like lime cheese cake bars. I made two pans, one for each of two different sets of co-workers, everyone loved them. I am planning on trying a lemon version, all the same just subbing out the lime. Thanks again!
This might be the best Keto desert I have made, and I have made a lot!!