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    Home » Sugar Free Baking

    Sugar Free Lemon Bars

    LAST UPDATED: August 19, 2020 | PUBLISHED: August 18, 2020 | BY: Kim

    These Sugar Free Lemon Bars are light, summery and easy to make. The filling is thick and creamy and sits on top of a sweet almond base. They're the perfect blend of sweet and tangy and ideal for picnics, afternoon teas, BBQ's, baby showers and more.

    Jump to Recipe
    a stack of 3 lemon bars on a white plate

    Why This Recipe Works

    • Easy to make with just 7 ingredients
    • These bars are naturally sweetened with no added sugar
    • They're packed with protein
    • They're light , sweet and tangy all in one
    • They'll keep for 5 days in the fridge
    • Its a great way to use up excess eggs!

    For a berry infused flavoured bars, check out these Blueberry and Lemon Crumb Bars which come together quickly in around 20 minutes.

    Ingredients

    ingredients for sugar free lemon bars

    Ingredient Notes

    • Lemon: Fresh lemon juice is best for this recipe. Look for one that is medium to large in size, is free from blemishes and spots and feels heavy when you hold it.
    • Granulated Sweetener: I use Lakanto Monkfruit Classic, however you could use any granulated sweetener that measures like sugar such as granulated stevia.
    • Powdered Sweetener: The brand I use is Lakanto Monkfruit Icing Powder (similar to icing sugar, powdered sugar).  Dusting a little on top adds a little additional sweetness to the zesty tang of the lemon bars.

    How To Make Baked Lemon Bars

    1. Blitz the base ingredients in a food processor until a dough is formed. (if you don't have a food processor, you can still make this using a bowl and spoon to make the base)
    ingredients for lemon bar base in a food processor
    1. Press the dough into a large loaf int lined with baking paper/parchment paper. Making sure to press the dough all the way to the edges, smoothing over the top with your fingers.
    2. Bake for 15 minutes. Remove from oven and set aside to make the filling.
    lemon bar base pressed into a loaf tin
    1. Mix thickened cream and cornflour/cornstarch together to form the basis of the lemon custard filling.
    2. Add the eggs, lemon, and sweetener into the cream and whisk to combine.
    mixing cornflour and cream in a bowl
    1. Strain the lemon filling over the cooled based, using a fine metal strainer.
    2. Bake in the oven for 30 minutes. Remove from oven and let it cool in the tin.
    pouring lemon bar filling onto the base
    1. Refrigerate for 3 to 4 hours, then slice with a sharp knife. Dust over powdered sweetener to serve.
    Dusting cooked lemon bars with powdered sweetener

    Recipe Tips

    • Lemon: using bottled lemon juice is certainly convenient, however using fresh lemons with give the bars so much more taste and flavour. Its definitely worth using fresh lemon.
    • Straining: Using a metal strainer to straining the lemon filling over the base does make a difference as it makes the filling super smooth and velvety.
    • Lining the baking tin: don't skip this step as it will make it difficult to remove the lemon slice in one piece. If you don;t have baking paper/parchment paper, you could use foil.
    • White spots/bubbles: If you notice white bubbles, marks or air pockets on the top of the slice after baking that's normal and is caused by the air in the eggs rising to the surface. Dust some powdered sweetener on top to cover it up!
    a stack of lemon bars on a serving plate

    Your Questions Answered

    Do lemon bars need to be refrigerated?

    Lemon bars are best kept in the fridge as they are essentially a custard. Keeping them in the fridge ensure they retain their firmness and stay fresh. If serving as part of an event, they are fine to be out of the fridge for an hour or so whilst guests are eating them.

    How long can you keep lemon bars?

    5 Days. Store lemon bars in an air tight container in the fridge. Discard after 5 Days.

    How do you cut lemon bars neatly?

    If you've lined your loaf tin with baking paper/parchment paper they will be easy to remove by pulling up the sides of the paper. Place slice onto a board (with paper intact). Cover and refrigerate slice for 3 to 4 hours before slicing. Use a sharp (unserated) knife and slice lengthways down the middle first, then cut widthways in half so you have quarters. Slice each portion twice more so you have 12 slices. Trim sides if you wish.

    More Sugar Free Baking Recipes

    • Chocolate Oat Granola Bars (Naturally Sweetened)
    • Ginger Carrot Loaf Cake with Walnuts
    • Moist Orange and Almond Cake
    • Easy Dairy Free Banana Bread
    • Raw Caramel Slice
    • 5 Ingredient Chewy Amaretti Biscuits

    Sugar Free Lemon Bars

    Kim
    These Sugar Free Lemon Bars are light, summery and easy to make. The filling is thick and creamy and sits on top of a sweet almond base. They're the perfect blend of sweet and tangy.
    4.37 from 11 votes
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    Prep Time 10 mins
    Cook Time 30 mins
    Total Time 40 mins
    Course Dessert
    Cuisine Australian
    Servings 12 slices
    Calories 166 kcal

    Equipment

    • Food Processor

    Ingredients
     

    Base

    • 1 ¾ cups (200 grams) Almond Meal
    • 4 tablespoons Granulated sweetener that measures like sugar - (see note 1)
    • ½ teaspoon sea salt
    • 1 large egg white

    Filling

    • 2 teaspoons Cornflour
    • ½ cup Thickened Cream
    • 5 medium Eggs - (room temperature)
    • ½ cup Granulated Sweetener that measures like sugar - (see note 1)
    • ½ cup Fresh Lemon juice

    Other

    • Powdered Sweetener to dust on top - (see note 3)

    Instructions
     

    Base:

    • Put all the ingredients for the base into a food processor and blitz until combined.
    • Line a large rectangle loaf tin with baking paper/parchment paper with the paper coming an inch above the sides of the tin (so its easy to remove once cooked).
    • Press into a baking tin lined with baking paper. I recommend using a rectangle loaf tin. (it might look like there is not enough dough but keep gently pushing it too the edges and it will be enough)
    • Bake in preheated FAN oven at 160 degrees C [250 degrees F] for 15 minutes or until lightly browned. Set aside and make the filling.

    Filling:

    • Add cornflour and cream to a bowl and whisk using a hand whisker until smooth and combined.
    • Add in the eggs, sweetener and lemon juice and whisk until combined, but not frothy.
    • Use a metal strainer to strain the lemon filling over the base.
    • Put back in the oven for 35 minutes at 160 degrees C [320 degrees F]. (Once removed from the oven the lemon custard filling will continue to cook a little).
    • Once cooked, remove from oven and let cool to room temperature for 30 minutes. Leave in the tin, cover with foil and refrigerate for 2 to 3 hours.
    • When it is cold, slice into 12 bars and store in an air tight container in the fridge. Bars will keep in the fridge for 4 to 5 days.
    • To serve, dust a little powdered sweetener over.

    Notes

    1. Granulated Sweetener: I use Lakanto Monkfruit Classic, however you could use any granulated sweetener that measures like sugar such as granulated stevia.
    2. Lemon: Fresh lemon juice is best for this recipe.
    3. Powdered Sweetener: The brand I use is Lakanto Monkfruit Icing Powder (similar to icing sugar, powdered sugar).  Dusting a little on top adds a little additional sweetness to the zesty tang of the lemon bars.

    Nutrition

    Serving: 1sliceCalories: 166kcalCarbohydrates: 12gProtein: 8gFat: 14gSaturated Fat: 4gSugar: 1g

    Note: Sugars contained in this recipe are from naturally occurring sugars in fruits, vegetables or other natural sweeteners.

    Keyword sugar free lemon bars
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    More Sugar Free Baking Recipes

    • Banana Carrot Muffins
    • Fudgy Cheesecake Brownies
    • Coconut Bread Loaf With Coconut Milk
    • Chocolate Avocado Cake
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    Hi there! I’m Kim and I'm passionate about living a life infused with mindfulness, simplicity and self-care. Here I share my recipes, tips, insights and wisdom for eating well, slowing down and reconnecting with the things that matter.

    Reader Interactions

    Comments

    1. Marg

      March 25, 2022 at 10:01 am

      Is it possible to substitute coconut yoghurt instead of cream?

      Reply
      • Kim

        March 31, 2022 at 8:19 am

        I haven't tried this recipe using coconut yoghurt instead of cream. I'm not too sure how coconut yoghurt would go setting in the oven sorry.

        Reply
    2. Jo Hill

      November 26, 2017 at 12:51 pm

      Can you use limes instead?

      Reply
      • Kim

        November 27, 2017 at 6:59 am

        Hi Jo,

        I haven't tried this with lime before, but it would be interesting to see how it went. It should work, you might just need to check the sweetness level and add more stevia if needed. Love to know how it goes.

        Thanks,
        Kim

        Reply

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    Kim Morris Hi there! I’m Kim. My sugar free kitchen is a site dedicated to creating healthy and delicious clean eating dinners and sweet treats with less sugar using simple ingredients and natural sweeteners. Read More...
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