sugar-free low carb lemon squares

Easy to Make Sugar-Free Low Carb Lemon Squares.

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These sugar-free low-carb lemon squares are an absolute favourite in our house. They are super easy to make and this version of sugar-free lemon squares is perfect for diabetics and anyone counting calories or carbs. Diabetic-Friendly squares and diabetic-friendly treats are great to add to cookie trays or potluck tables.

diabetic sugar-free lemon squares recipe
Easy Diabetic Sugar Free Low Carb Lemon Squares

Cooking the low-carb way is not complicated. It is quite easy once you know what substitutions to use for various ingredients. Changing a few ingredients in a traditional lemon squares recipe means we can enjoy a delicious sugar free Lemon Square

For example – a traditional lemon square recipe contains, flour and sugar. In our sugar-free low carb lemon squares, we substituted the all-purpose flour with Almond flour and substituted the granulated sugar with sweetener.

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easy to make sugar free low carb lemon squares
Sugar-Free Low Carb Lemon Squares

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Ingredients List

Helpful Tips and FAQs

Fresh lemon juice vs. bottled juice

Whenever possible freshly squeezed lemon juice is always preferred.

It provides a more lemony flavour and isn’t cloudy looking.

Bottled lemon juice is also bitter (in my opinion) Freshly juiced lemons have more vitamins and nutrients as it hasn’t gone through any cooking or processing.

One medium-sized ripe lemon squeezed usually yields about 3 tbsps of lemon juice

How to choose quality lemons when shopping.

When buying lemons (or any citrus) there are a few simple rules for picking the best fruit possible.

Weight – when choosing lemons, go for the heavier ones as opposed to the light ones. The heavier lemons will be juicier.

Size – medium to large size lemons will be sweeter than the smaller ones. Small ones are often bitter.

Squeeze – the lemon should give a little when squeezed. That is a good indicator of ripeness.

Colour – the best lemons should be a bright and brilliant yellow, with no blemishes or green spots. a dull-looking lemon is usually overripe.

Skin – you will see both thin and thick-skinned lemons. A thicker-skinned lemon can be good when you need a lot of zest. For our recipe for low-carb lemon squares, use one that is of average thickness.

Tips on juicing the lemons

When juicing lemons, always have the lemon at room temperature or warmer before cutting. You can microwave the lemon for about 30 seconds on medium to high power to warm up the lemon.

Using the palm of your hand, roll the lemon on the counter before cutting. The rolling helps to release the juice inside of the lemon.

When you are juicing the lemon, you will want to get as much juice as possible for your recipe. This low-carb lemon squares recipe calls for 1/4 cup of freshly squeezed lemon juice. If you have picked a juicy, moderately-sized lemon, you should have no trouble getting that much from one lemon.

If you have juiced the lemon and are short a bit of juice, it is ok to add store-bought lemon juice to the recipe.

There are many types of juicers on the market. I prefer a traditional glass juicer. It is simple and easy to clean. This juicer(below) was my grandmother’s and it is still like new. The ridges on the base collect the pulp and seeds and you just easily pour off the juice. It’s my number-one pick!

Zesting the lemon

Never skip this step. A lot of lemon flavour comes from the lemon zest. When zesting, only remove the skin but do not go into the white pith of the lemon. This part of the lemon is bitter and can add a bitter flavour to your lemon squares or other recipes.

zest from the  fresh lemon
Always use fresh lemon zest. It adds a lot of lemon flavour to the recipe.

How to Make Sugar-Free Low Carb Lemon Squares

Recipe for Sugar-Free Low Carb Lemon Squares

sugar-free low carb lemon squares

Sugar-Free Low Carb Lemon Squares

A sugar-free low carb diabetic friendly recipe for delicious lemon squares.
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Course: Dessert
Cuisine: American
Keyword: diabetic lemon squares, sugar-free lemon squares
Prep Time: 30 minutes
Cook Time: 35 minutes
Total Time: 1 hour 5 minutes
Servings: 16
Calories: 42kcal
Author: The Naked Diabetic
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  • 1/2 cup almond flour
  • 2 tbsp melted butter
  • 1/3 cup Splenda, sweetener


  • 2 eggs (medium or large)
  • 3/4 cup Splenda sweetener
  • 1/4 cup freshly squeezed, lemon juice
  • 1 tbsp lemon zest
  • 1 tbsp almond flour
  • 1 tsp baking powder
  • 2 tbsp coconut (optional)


  • Preheat oven to 350°F (175°C)
  • In a small mixing bowl combine crust ingredients and mix until it forms a loose crumble.
  • Press crumble into an 8 by 8 inch baking dish.
  • Bake on center rack in oven for 10 minutes.


  • In a medium sized mixing bowl, whisk the eggs.
  • Add the sweetener and whisk until blended.
  • Add the remaining ingredients (except coconut) and whisk, until thoroughly mixed.
  • Pour over the pre-baked crust.
  • If adding coconut, sprinkle evenly over the top.
  • Bake in 350° F (175°C) oven for approximately 25 minutes.
  • Remove from oven and allow to cool.
  • Using a small sieve and some Splenda sweetener, dust the top of the bars.
  • Cut into 2-inch squares.


Calories: 42kcal

Nutritional value for Sugar-Free Low Carb Lemon Squares

One Serving = 1 square – the recipe is divided into 16 equal squares

  • Calories – 42
  • Total fat – 3.7 gr
  • Saturated Fat – 1.2 gre
  • Total carbs – 3 gr
  • Fibre – 1 gr
  • Net carbs – 2 gr
  • Protein – 2 gr
  • Sodium – 20 mg

Nutrition information is provided as a courtesy and is automatically calculated using an online nutrition calculator. We encourage you to calculate nutrition data with your specific brand ingredients as nutritional information can vary between brands

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