Almond Flour Lemon Bars with a buttery shortbread crust and creamy vibrant lemon filling. These gluten-free lemon bars are easy to prepare and makes the absolute best Spring and Summer dessert!

Stack of almond flour lemon bars on a sheet of parchment paper with the rest of the lemon bars all around. A slice of lemon on top of the bars.

Lemon fanatics, deliciousness incoming!

These easy to prepare Almond Flour Lemon Bars are rich and buttery with the most tangy lemon flavor! The almond flour shortbread crust really sets these gluten free lemon bars apart, as it truly has the best texture! Richer, nuttier, and chewier than regular all purpose flour.

Made with only a handful of simple ingredients, this simple recipe is the perfect go-to lemon dessert. The way I see it, they are a great option for sharing at summer gatherings or special occasions, and for everyday enjoyment alike!

Almond flour, eggs, butter, sugar, and fresh lemons are all we need! Let’s chat about the ingredients in detail, as each one serves an important purpose.

Lemon Bar Ingredients:

Almond Flour Crust Ingredients:

Almond Flour: The base of the crust is made with finely-ground almond flour, which is naturally grain-free and gluten-free. I like using almond flour because it contains fiber, a little protein, and healthy fats – I’m all about adding nutrition to everything!

Butter: Responsible for that sultry creamy flavor, unsalted butter helps bind the dry ingredients together. 

Granulated Sugar: Pick your favorite granulated sweetener! Regular cane sugar, maple sugar, and sugar-free sweetener are all great options. Coconut sugar works too, but it causes the bars to have a brown hue.

Sea Salt: A pinch of sea salt enhances flavors! Don’t skip it.

For the Lemon Filling:

Fresh Lemons: Crucial to the success of this amazing dessert recipe. We need fresh lemons for both lemon zest and fresh lemon juice. The zest is what brings the most amount of lemon flavor, so don’t skip fresh lemons for bottled juice.

Eggs: You’ll notice there are quite a few eggs in this recipe! They are here for the lemon curd filling. The combination of lemon juice, eggs, and sugar are what make that silky smooth creamy custard lemon filling. 

Granulated Sweetener: Use the same sweetener you use for the crust. I use white sugar or maple sugar.

Almond Flour: It may seem strange to add almond flour to the filling, but trust me – it works.

Recipe Customizations:

  • For a dairy-free version, swap the melted butter for melted coconut oil.
  • I don’t recommend swapping out the almond flour for any other flour, especially coconut flour.
  • Prefer using pure maple syrup over refined sugar? I get it. I haven’t tested the recipe yet using pure maple syrup, but please do let me know if you do.
  • Meyer lemons work too, but I find regular lemons have heartier zest. For this reason, I recommend regular lemons for the best flavor.

How to Make Lemon Bars:

Preheat the oven to 350 degrees Fahrenheit and line a 9” x 9” baking dish with parchment paper.

Mix the crust ingredients together in a large mixing bowl until a thick dough forms. Feel free to use a hand mixer if you’d like.

A red mixing bowl filled with crumbly, light brown Keto Lemon Bars dough mixture, with part of a metal spoon visible in the upper right corner.

Transfer the dough to the parchment-lined pan. Use your hands or the back of a spoon to press the dough into an even layer.

Poke dough several times with a fork. This allows the crust to bake evenly. Bake crust on the center rack of the preheated oven for 12 to 15 minutes, or until golden brown.

A parchment-lined baking pan filled with unbaked dough, evenly pressed and pricked with a fork in a diagonal pattern—perfect as the base for keto lemon bars.

Make the lemon bar filling while the crust is baking. Whisk together the eggs, lemon juice and lemon zest in a mixing bowl until well combined. 

Wet ingredients for lemon filling in a mixing bowl

Stir in the granulated sugar and the almond flour until combined. 

Lemon bars fresh out of the oven

Pour the creamy lemon filling mixture over the pre-baked crust. Bake lemon bars for 15-18 minutes, or until the filling has set up but is still soft.

Allow the bars to cool completely on the countertop. Cover the pan with plastic wrap and refrigerate for 2 hours, until completely chilled.

Pull up on the parchment paper and transfer the lemon bars to a cutting board. Use a sharp knife to slice into lemon squares, and enjoy!

A close-up of a tray of Keto Lemon Bars cut into even squares shows a yellow, slightly textured top layer with tiny specks, all arranged on parchment paper.

Store lemon bars in an airtight container in the refrigerator for up to 1 week. Freeze in a large zip lock bag or freezer-safe container for up to 3 months.

The best part is sweet treats like this taste even better the next day! For this reason, feel free to prepare the recipe in advance.

Stack of four lemon bars with a slice of lemon on top. Ready to eat.

Nothing to it but to do it!

If you’re a lemon fanatic, you’ll get an absolute kick out of these luscious bars! The buttery crust paired with the creamy lemon custard filling is mouth-watering delicious! 

My favorite part is that the bars aren’t overly sweet the way classic lemon bars are. I also think the lemon filling has superior texture, but these are just my own personal opinions.

If you love baking grain-free treats like these healthy lemon bars, also try out these gems!

More Grain-Free Dessert Recipes:

Enjoy these luscious little dewdrops of joy!

Stack of almond flour lemon bars on a sheet of parchment paper with the rest of the lemon bars all around. A slice of lemon on top of the bars.

Almond Flour Lemon Bars Recipe

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These easy to prepare gluten-free lemon bars are positively packed with rich buttery lemon flavors and they have the best texture! The perfect dessert for lemon lovers!
Prep Time 20 minutes
Cook Time 27 minutes
Total Time 47 minutes
Servings: 12 Bars

Ingredients

For the Crust:

For The Lemon FIlling:

  • 5 large eggs
  • 1 cup fresh lemon juice
  • 1 Tbsp lemon zest 2-3 lemons, zested
  • ½ cup granulated sugar
  • ½ cup almond flour

Instructions

  • Preheat the oven to 350 degrees Fahrenheit and line a 9” x 9” baking pan with parchment paper.
  • Mix the crust ingredients together in a large mixing bowl until a thick dough forms.
  • Transfer the dough to the parchment-lined pan. Use your hands to press the dough into an even layer. Poke dough several times with a fork. This allows the crust to bake evenly. Bake the crust on the center rack of the preheated oven for 12 to 15 minutes, or until golden-brown.
  • Make the lemon bar filling while the crust is baking. Whisk together the eggs, lemon juice and lemon zest in a mixing bowl until well combined.
  • Stir in the granulated sugar and the almond flour until combined.
  • Pour the lemon filling mixture over the pre-baked crust. Bake lemon bars for 15-18 minutes, or until the filling has set up but is still soft.
  • Allow the bars to cool completely on the countertop. Cover the pan with plastic wrap and refrigerate for 2 hours, until completely chilled. Pull up on the parchment paper and transfer the lemon bars to a cutting board. Use a sharp knife to slice into bars, and enjoy!

Notes

*Use melted coconut oil for a dairy-free option
**Use regular cane sugar, sugar-free sweetener, or maple sugar.

Nutrition

Serving: 1bar (of 12) · Calories: 302kcal · Carbohydrates: 18g · Protein: 11g · Fat: 22g · Saturated Fat: 5g · Polyunsaturated Fat: 1g · Monounsaturated Fat: 3g · Cholesterol: 106mg · Sodium: 77mg · Fiber: 4g · Sugar: 13g · Iron: 1mg
Author: Julia Mueller
Course: Desserts & Treats
Cuisine: American
Keyword: almond flour desserts, almond flour lemon bars, almond flour recipe, almond flour recipes
Did You Make This Recipe?I want to see it! Tag @the.roasted.root on social media!
Julia Mueller
Meet the Author

Julia Mueller

Julia Mueller is a recipe developer, cookbook author, and founder of The Roasted Root. She has authored three bestselling cookbooks, – Paleo Power Bowls, Delicious Probiotic Drinks, and The Quintessential Kale Cookbook. Her recipes have been featured in several national publications such as BuzzFeed, Self, Tasty, Country Living, Brit.co, etc.

Read More About Julia

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