No Bake Lemon Blueberry Bars
There are days when you want a bright, zesty dessert without turning on the oven, and these no bake lemon blueberry bars deliver exactly that with a creamy, fruity finish every time. I’ve been making this for over 7 years, and it never disappoints, offering a perfect balance between tangy lemon and sweet blueberries.
Recipe Overview
- Prep Time: 20 minutes
- Chill Time: 4 hours (minimum)
- Total Time: 4 hours 20 minutes
- Servings: 12 generous squares
- Difficulty: Easy
Why You’ll Love This No Bake Lemon Blueberry Bars
- No oven required: Perfect for warm weather when you don’t want to heat up the kitchen, or when you’re short on time.
- Bright, refreshing flavour: The sharpness of the lemon cuts through the sweetness of the blueberries, creating a balanced, zingy dessert.
- Make-ahead friendly: These bars need time to set in the fridge, so you can prepare them a day in advance and simply slice when needed.
- Beautiful presentation: The vibrant purple-blue berry layer against the pale, creamy filling looks stunning on any dessert table.
- Crowd-friendly texture: The buttery biscuit base gives a satisfying crunch against the smooth, mousse-like filling. My kids absolutely devour this every time I make it.
Ingredients You’ll Need
- 200g digestive biscuits (or similar plain tea biscuits)
- 100g unsalted butter, melted
- 30g caster sugar
- 300g full-fat cream cheese, softened to room temperature
- 100g icing sugar, sifted
- 300ml double cream
- Finely grated zest of 2 large lemons
- 60ml freshly squeezed lemon juice (about 2 lemons)
- 1 teaspoon vanilla extract
- 200g fresh or frozen blueberries (if using frozen, do not thaw)
- 50g granulated sugar (for the blueberry layer)
- 1 tablespoon cornflour
- 2 tablespoons cold water
Tip: For the best flavour, use unwaxed lemons if you can find them, as you’ll be using the zest. Full-fat cream cheese is essential here; low-fat versions will make the filling too thin and it won’t set properly.
How to Make No Bake Lemon Blueberry Bars
- Prepare the biscuit base: Place the digestive biscuits in a sealed food bag and crush them into fine crumbs using a rolling pin, or pulse them in a food processor until you have a sandy texture with no large pieces. Tip the crumbs into a medium bowl, pour in the melted butter and the 30g of caster sugar, and stir until every crumb is coated and the mixture looks like wet sand. Press this mixture firmly and evenly into the bottom of a 9×13 inch baking dish lined with aluminium foil, using the flat bottom of a glass to compact it well. Place the dish in the fridge to chill while you prepare the filling.
- Make the blueberry compote: In a small saucepan, combine the blueberries and the 50g of granulated sugar. Cook over a medium heat for 5-7 minutes, stirring occasionally, until the blueberries have burst and released their juices. You will see the mixture become thick and syrupy, and the colour will turn a deep, rich purple. In a small bowl, whisk the cornflour with the cold water until smooth, then pour this slurry into the blueberry mixture. Stir constantly for another minute until the compote thickens noticeably and coats the back of a spoon. Remove from the heat and allow it to cool completely to room temperature.
- Whip the cream: In a large, clean bowl, pour the double cream and vanilla extract. Using an electric hand whisk or a stand mixer fitted with the whisk attachment, whip the cream until it holds soft peaks. When you lift the whisk, the cream should form a gentle peak that flops over slightly. Be careful not to overwhip it, or it will become grainy and start to separate.
- Make the lemon filling: In a separate large bowl, beat the softened cream cheese with an electric mixer until it is completely smooth and free of lumps, which should take about 1 minute. Add the sifted icing sugar, lemon zest, and lemon juice, and beat again until the mixture is silky and well combined, with a pale yellow colour and a fresh, zesty aroma.
- Fold everything together: Take a third of the whipped cream and stir it into the cream cheese mixture to lighten it. Then, gently fold in the remaining whipped cream using a rubber spatula. Use a figure-of-eight motion, cutting through the centre and bringing the mixture from the bottom up. Fold just until no white streaks remain; the filling should be thick, airy, and mousse-like in texture.
- Assemble the bars: Remove the chilled base from the fridge. Spoon the lemon cream cheese filling over the biscuit base and spread it into an even layer using an offset spatula or the back of a spoon. Drop small spoonfuls of the cooled blueberry compote over the top of the filling. Using a knife or a skewer, gently swirl the blueberry compote into the lemon filling to create a marbled effect. Do not over-swirl, or the colours will muddy together.
- Chill until set: Cover the dish tightly with cling film and refrigerate for at least 4 hours, but preferably overnight. The bars are ready when the filling feels firm to the touch and no longer wobbles when you gently shake the dish. The longer they set, the cleaner your slices will be.
- Slice and serve: Once fully set, lift the bars out of the dish using the foil overhang. Place them on a chopping board and use a sharp, clean knife to cut into 12 even squares. Wipe the knife clean between cuts for the neatest edges.
Tips From My Kitchen
- Use room temperature cream cheese: This is the most important step for a silky filling. Cold cream cheese will not blend smoothly and will leave you with lumpy bars. Take it out of the fridge at least 30 minutes before you start, or cut it into small cubes to speed up the process.
- Line your dish properly: Use a large sheet of aluminium foil that hangs over the two long sides of your baking dish by about 5cm. This creates ‘handles’ that allow you to lift the entire block of bars out cleanly for easy slicing. A light coating of butter on the foil helps it stick to the dish and prevents slipping when you press the base.
- Cool the blueberry compote completely: If you add warm or even slightly warm compote to the lemon filling, it will melt the cream and ruin the texture, leaving you with a soupy mess. Let it sit at room temperature until it is completely cool to the touch.
- Don’t skip the cornflour slurry: Blueberries are naturally high in pectin, but they still need a little help to thicken into a proper compote. Without the cornflour, the blueberry layer will be too runny and will bleed into the lemon filling, making the bars watery rather than creamy.
- Patience with the chilling time: Four hours is the absolute minimum, but if you can wait 6-8 hours or overnight, you will be rewarded with perfectly firm bars that slice cleanly. Rushing this step will result in a messy, soft dessert that doesn’t hold its shape.
Equipment You’ll Need
- 9×13 inch baking dish
- Aluminium foil
- Mixing bowls (large and medium)
- Sharp knife
- Electric hand whisk or stand mixer
- Small saucepan
- Rubber spatula
- Rolling pin or food processor
Common Mistakes to Avoid
- Overcrowding the pan: This recipe is designed for a 9×13 inch dish. Using a smaller dish will make the layers too thick, meaning the centre won’t set properly, and the bars will be difficult to slice. Stick to the recommended size for the best results.
- Wrong temperature: The fridge is the only place these bars should set. Do not try to speed up the process in the freezer, as the cream filling can separate and become icy. A steady, cold temperature in the fridge is essential for the creamy texture.
- Skipping the rest time: The filling needs time to firm up so that the flavours meld together and the texture becomes sliceable. Cutting into the bars too early will give you a spoonable dessert rather than neat squares, and the flavours won’t have had time to develop fully.
What to Serve With No Bake Lemon Blueberry Bars
- A dollop of lightly whipped double cream and a few extra fresh blueberries on top.
- A refreshing glass of iced tea or a simple lemonade to complement the citrus notes.
- For a lighter option, serve alongside a scoop of Refreshing Peach Sorbet for a wonderful fruity combination.
Still hungry for ideas? You might also love Blueberry Crumb Bars Allrecipes, No Bake Lemon Blueberry Tart from our sister kitchens.
Frequently Asked Questions
Can I use frozen blueberries for the compote?
Yes, absolutely. In fact, frozen blueberries often work beautifully because they are already soft and break down quickly when heated. Just be sure to add them directly to the pan from the freezer without thawing first, as thawing can make them release too much water too quickly.
How long will these bars keep in the fridge?
These bars will keep well in an airtight container in the fridge for up to 4 days. The biscuit base will soften slightly over time, but the flavour actually improves as the lemon and blueberry meld together. I think they taste even better on the second day.
Can I freeze no bake lemon blueberry bars?
Yes, you can freeze them for up to 2 months. Slice the bars first, then place them on a baking sheet lined with baking paper and freeze until solid. Transfer the frozen slices to a freezer-safe container with layers of baking paper between them. Thaw in the fridge for a few hours before serving.
What can I use instead of digestive biscuits?
Graham crackers or any plain, buttery shortbread biscuit will work perfectly as a substitute. You could also use crushed oat biscuits for a slightly different flavour. The key is to use a biscuit that is not too sweet, as the filling and compote provide plenty of sweetness already.
Why did my lemon filling turn out runny?
A runny filling usually means the cream was not whipped enough, or the cream cheese was too soft or low in fat. Ensure your cream is whipped to soft peaks before folding, and always use full-fat cream cheese. Also, double-check that your blueberry compote was completely cool before adding it, as heat can destabilise the cream.
no bake lemon blueberry bars
These no-bake lemon blueberry bars feature a buttery biscuit crust, a luscious and tangy lemon cream cheese filling, and a homemade blueberry compote swirled on top. They’re an easy, refreshing dessert that sets beautifully in the fridge.
Ingredients
Method
-
Prepare the biscuit base: Place the digestive biscuits in a sealed food bag and crush them into fine crumbs using a rolling pin, or pulse them in a food processor until you have a sandy texture with no large pieces. Tip the crumbs into a medium bowl, pour in the melted butter and the 30g of caster sugar, and stir until every crumb is coated and the mixture looks like wet sand. Press this mixture firmly and evenly into the bottom of a 9×13 inch baking dish lined with aluminium foil, using the flat bottom of a glass to compact it well. Place the dish in the fridge to chill while you prepare the filling.
-
Make the blueberry compote: In a small saucepan, combine the blueberries and the 50g of granulated sugar. Cook over a medium heat for 5-7 minutes, stirring occasionally, until the blueberries have burst and released their juices. You will see the mixture become thick and syrupy, and the colour will turn a deep, rich purple. In a small bowl, whisk the cornflour with the cold water until smooth, then pour this slurry into the blueberry mixture. Stir constantly for another minute until the compote thickens noticeably and coats the back of a spoon. Remove from the heat and allow it to cool completely to room temperature.
-
Whip the cream: In a large, clean bowl, pour the double cream and vanilla extract. Using an electric hand whisk or a stand mixer fitted with the whisk attachment, whip the cream until it holds soft peaks. When you lift the whisk, the cream should form a gentle peak that flops over slightly. Be careful not to overwhip it, or it will become grainy and start to separate.
-
Make the lemon filling: In a separate large bowl, beat the softened cream cheese with an electric mixer until it is completely smooth and free of lumps, which should take about 1 minute. Add the sifted icing sugar, lemon zest, and lemon juice, and beat again until the mixture is silky and well combined, with a pale yellow colour and a fresh, zesty aroma.
-
Fold everything together: Take a third of the whipped cream and stir it into the cream cheese mixture to lighten it. Then, gently fold in the remaining whipped cream using a rubber spatula. Use a figure-of-eight motion, cutting through the centre and bringing the mixture from the bottom up. Fold just until no white streaks remain; the filling should be thick, airy, and mousse-like in texture.
-
Assemble the bars: Remove the chilled base from the fridge. Spoon the lemon cream cheese filling over the biscuit base and spread it into an even layer using an offset spatula or the back of a spoon. Drop small spoonfuls of the cooled blueberry compote over the top of the filling. Using a knife or a skewer, gently swirl the blueberry compote into the lemon filling to create a marbled effect. Do not over-swirl, or the colours will muddy together.
-
Chill until set: Cover the dish tightly with cling film and refrigerate for at least 4 hours, but preferably overnight. The bars are ready when the filling feels firm to the touch and no longer wobbles when you gently shake the dish. The longer they set, the cleaner your slices will be.
-
Slice and serve: Once fully set, lift the bars out of the dish using the foil overhang. Place them on a chopping board and use a sharp, clean knife to cut into 12 even squares. Wipe the knife clean between cuts for the neatest edges.
Notes
For best results, allow the bars to chill overnight to ensure they are perfectly firm and easy to slice. Using an offset spatula helps create a smooth top layer for the filling. If using frozen blueberries, do not thaw them before making the compote.
I hope you enjoy making these no bake lemon blueberry bars as much as I do. They have become a staple in my kitchen for summer gatherings and lazy weekends alike. If you love no-bake desserts, you might also enjoy making No Bake Strawberry Cheesecake Mason Jars for a portable treat, or try this Easy No Bake Oreo Dessert for something chocolaty. I would love to hear how yours turn out, so please leave a comment below and share your experience.
