
If you have been craving lemon bars but want something that actually fits into a balanced lifestyle, this recipe was made for you. These greek yogurt lemon bars come in at around 130 calories per bar, and every single bite delivers that bright, zippy lemon flavour you love, without the sugar crash that usually follows. They sit beautifully in the middle ground between a dessert and a snack, which means you can enjoy one after lunch or pack them into a lunchbox without a second thought. This is the kind of treat that feels indulgent but works hard for your health goals at the same time.
The filling is built on full-fat plain Greek yogurt, which is the real star here. Greek yogurt brings a natural creaminess and tang that mirrors the sharpness of lemon perfectly, while also adding a solid hit of protein to each bar. Fresh lemon juice and a generous amount of lemon zest do the heavy lifting on flavour, and a small amount of pure maple syrup keeps things gently sweet without any refined sugar. Two whole eggs help set the custard into that classic, slightly wobbly lemon curd texture. The crust uses rolled oats blended into a rough flour alongside a touch of coconut oil and a drizzle of honey, giving you a crumbly, golden base with more fibre than a traditional shortbread. Every ingredient earns its place.
The texture is genuinely lovely. The base bakes up firm and slightly chewy at the edges, then gives way to a silky, set custard layer that trembles just a little when you lift a bar from the tin. The lemon flavour is bold but not overwhelming, with a natural sweetness that lets the citrus shine. Dust the tops with a little powdered erythritol or simply serve them plain with a few thin lemon slices and a small scattering of fresh raspberries. They look impressive on a plate, which makes them a great option for hosting friends or bringing to a gathering where you want to offer something a little lighter than the usual dessert spread. Chill them well before slicing for the cleanest cuts.
From a nutritional standpoint, these bars punch well above their weight. Each serving delivers around 6 grams of protein thanks to the Greek yogurt and eggs, which is unusually high for a dessert. The oat-based crust adds dietary fibre that traditional shortbread simply cannot match. Using maple syrup instead of white sugar means a lower glycaemic hit, and the absence of butter in the filling keeps saturated fat in check. Lemons themselves bring vitamin C and plant compounds that support immune function, and the probiotics naturally present in Greek yogurt are good news for gut health. This is genuinely a dessert you can feel good about, not just one that has been labelled healthy as a marketing trick.
Ingredients
- 1 cup rolled oats (blended into a coarse flour)
- 2 tbsp coconut oil (melted and cooled)
- 1.5 tbsp raw honey (or pure maple syrup)
- 1 pinch fine sea salt (for the crust)
- 1.5 cups full-fat plain Greek yogurt (at room temperature)
- 2 large eggs (at room temperature)
- 3 tbsp pure maple syrup (for the filling)
- 1 tbsp arrowroot powder (helps set the custard without extra fat)
- 3 tbsp fresh lemon juice (from roughly 2 lemons)
- 1.5 tsp finely grated lemon zest (unwaxed lemons preferred)
- 0.5 tsp pure vanilla extract
- 1 tbsp powdered erythritol (optional, for dusting before serving)
Instructions
- 1
Preheat your oven to 175C or 350F. Line an 8x8 inch baking tin with parchment paper, leaving some overhang on two sides so you can lift the bars out cleanly later.
Press the parchment into the corners neatly so your crust edges come out sharp.
- 2
Add the rolled oats to a blender or food processor and blitz for about 30 seconds until you have a rough, slightly chunky flour. You want some texture left in there, not a perfectly smooth powder.
A few larger oat pieces in the mix give the crust a lovely chewiness.
- 3
Tip the oat flour into a bowl and stir in the melted coconut oil, honey and a pinch of salt. Mix until the mixture resembles damp sand and holds together when you press it between your fingers.
- 4
Press the crust mixture firmly and evenly into the base of the lined tin. Use the back of a spoon or a flat-bottomed glass to compact it well. Bake for 10 minutes until lightly golden, then remove from the oven and set aside to cool for 5 minutes.
Do not skip the pre-bake. A raw oat crust will turn soggy under the filling.
- 5
While the crust cools slightly, make the filling. In a medium bowl, whisk together the Greek yogurt, eggs, maple syrup, arrowroot powder, fresh lemon juice, lemon zest and vanilla extract until completely smooth and well combined.
Room temperature yogurt and eggs blend far more smoothly than cold ones straight from the fridge.
- 6
Pour the lemon filling evenly over the pre-baked crust. Tap the tin gently on the counter a couple of times to release any air bubbles sitting near the surface.
- 7
Return the tin to the oven and bake for 18 minutes. The filling should be mostly set around the edges but have a very slight wobble in the very centre. It will firm up further as it cools.
Do not overbake. An overcooked filling can crack and lose its creamy texture.
- 8
Allow the bars to cool completely at room temperature in the tin, then transfer to the fridge and chill for at least 2 hours before slicing. Slice into 12 equal bars using a sharp knife wiped clean between cuts.
For the cleanest slices, chill overnight. The bars set even more firmly and cut like a dream.
- 9
Dust lightly with powdered erythritol just before serving if you like. Add a thin lemon slice or a couple of fresh raspberries on top for presentation.
Nutrition per serving
130kcal
Calories
6g
Protein
14g
Carbs
5g
Fat
1g
Fibre
7g
Sugar
55mg
Sodium
Pro Tips
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Use unwaxed lemons for the zest. Waxed skins can leave a bitter aftertaste.
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Full-fat Greek yogurt gives the creamiest texture. Low-fat versions can make the filling slightly watery.
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Room temperature ingredients are key for a smooth, lump-free filling.
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A sharp knife wiped between cuts gives you neat, bakery-style bars.
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The bars will keep their best texture for the first 3 days. After that the crust softens slightly.
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Do not add extra lemon juice beyond the recipe amount without also increasing the arrowroot, or the filling may not set properly.
Frequently Asked Questions
Variations
- •
Raspberry Lemon Bars
Press 8 to 10 fresh raspberries gently into the top of the filling just before baking. They sink slightly and create pretty pockets of tart fruit throughout the custard layer.
- •
Coconut Lemon Bars
Add 2 tablespoons of unsweetened desiccated coconut to the oat crust mixture and a few drops of coconut extract to the filling for a tropical twist.
- •
Lime Yogurt Bars
Swap all the lemon juice and zest for fresh lime juice and lime zest for a sharper, more tropical citrus hit. Works beautifully with a few slices of kiwi on top.
- •
Lavender Lemon Bars
Stir half a teaspoon of dried culinary lavender into the filling mixture before pouring over the crust. The floral note pairs beautifully with the bright lemon and creamy yogurt.
Substitutions
- •Coconut oil → Unsalted butter (Use the same quantity melted. The crust will be slightly richer and less dairy-free.)
- •Maple syrup in filling → Raw honey (Use the same quantity. Honey has a slightly stronger flavour but works well with lemon.)
- •Arrowroot powder → Cornstarch (Use exactly the same quantity. Cornstarch is more widely available and behaves identically here.)
- •Rolled oats → Almond flour (Use 1 cup of almond flour for a grain-free, lower-carb crust. The texture will be denser and more cookie-like.)
- •Eggs → Flax eggs (Mix 2 tablespoons of ground flaxseed with 6 tablespoons of water and rest for 10 minutes. The filling will be slightly softer and less custardy but still sets reasonably well.)
🧊 Storage
Store the bars in an airtight container in the refrigerator for up to 4 days. Place a sheet of parchment between layers if stacking to prevent sticking. Do not leave at room temperature for more than 2 hours as the yogurt-based filling needs to stay chilled.
📅 Make Ahead
These bars are an excellent make-ahead dessert. Bake and chill the day before you need them. The flavour actually deepens overnight and the bars slice much more cleanly after a full night in the fridge. Add any toppings or the powdered erythritol dusting just before serving.


