These Lemon Crumb Bars Are Bright, Creamy & So Easy

I love a lemon dessert when the weather starts warming up and these lemon crumb bars taste so good! They’ve got a buttery crumb crust, a creamy lemon filling, and just the right balance of sweet and tangy flavors.

These bars are super simple to make with basic ingredients and work really well for bake sales, BBQs, baby showers, or just as a little weekend treat with a cup of coffee. The crumb topping gives them a slightly bakery-style feel without needing loads of effort.

If you enjoy bright lemon desserts, you should also try my lemon brownies recipe too. They’ve got that same fresh lemon flavor but with a soft, fudgy texture that’s honestly hard to stop eating.

Ingredients

• All purpose flour: This forms both the buttery crust and the crumb topping for the bars.
• Granulated sugar: Adds sweetness and helps balance out the tart lemon flavor.
• Salt: Just a little helps bring out all the other flavors in the recipe.
• Baking powder: Gives the crumb mixture a slightly lighter texture as it bakes.
• Unsalted butter, melted and cooled: This holds the crumb mixture together and gives it that rich, buttery flavor.
• Sweetened condensed milk: Makes the lemon filling smooth, creamy, and perfectly sweet.
• Egg yolks: These help create that rich, custard-like texture in the filling.
• Heavy cream: Adds a little extra creaminess to the lemon layer.
• Pinch of salt: A tiny bit of salt helps keep the filling from tasting overly sweet.
• Fresh lemon juice: Freshly squeezed lemon juice gives these bars their bright, fresh citrus flavor.

Recipe Instructions

Full measurements and cooking times can be found in the recipe card at the bottom of this post.

Step 1: Preheat your oven to 350°F. Line a 9×9-inch baking dish with parchment paper and set it aside.

Step 2: In a medium bowl, whisk together the flour, sugar, salt, and baking powder.

Step 3: Pour in the melted butter and mix until everything is combined and no dry patches remain. The mixture will have a crumbly texture.

Step 4: Press about three-quarters of the mixture into the bottom of the prepared dish, spreading it evenly to form the crust. Set the remaining quarter aside for the topping.

Step 5: Bake the crust for 15 minutes.

Step 6: While the crust bakes, whisk together the sweetened condensed milk, egg yolks, heavy cream, salt, and lemon juice in a large bowl until smooth and fully combined.

Step 7: Once the crust is out of the oven, pour the filling over it and spread it into an even layer.

Step 8: Sprinkle the reserved crumb mixture evenly over the top.

Step 9: Return the dish to the oven and bake for another 15 to 20 minutes. The center should still have a slight jiggle but feel set.

Step 10: Let the bars cool completely, then transfer to the refrigerator and chill for at least 4 hours or overnight.

Step 11: Slice into squares and serve.

What to Serve with Lemon Crumb Bars

• Fresh berries: Strawberries, raspberries, or blueberries work really well with the bright lemon flavor and give it a real summery vibe.
• A hot cup of coffee: I love these with coffee in the afternoon because the sweet lemon filling goes so well with a strong cup.
• Tea: These are perfect with iced tea in the summer or a cozy mug of hot tea when you want something simple for dessert.
• Whipped cream: A little dollop on the side makes them feel a bit more special without adding much extra effort.
• Vanilla ice cream: The cold, creamy ice cream tastes so good alongside the tangy lemon filling.
• A simple brunch spread: These fit right in alongside fruit salad, muffins, and pastries for baby showers, brunches, or spring gatherings.

Storing

These lemon crumb bars need to be kept in the refrigerator because of the creamy lemon filling. I usually store them in an airtight container and they keep well for around 4 to 5 days.

If you’re stacking these to store them, it helps to place a sheet of parchment paper between the layers so the crumb topping stays looking nice.

I actually think they taste even better after they’ve been chilled for a few hours, so they’re a great make-ahead dessert for parties and BBQs etc.

You can also freeze them if you want to make them ahead. Just wrap the bars tightly and freeze for up to 2 months. I like to thaw them overnight in the fridge before serving.

Variations & Substitutions

• Use bottled lemon juice if you need to: Fresh lemon juice gives the best flavor, but bottled lemon juice will still work if that’s what you already have at home.
• Add lemon zest: If you want an even stronger lemon flavor, stir a little fresh lemon zest into the filling mixture.
• Try a lime version: You can swap the lemon juice for lime juice for a slightly different citrus flavor that’s really nice in the summer.
• Make them extra sweet: A light dusting of powdered sugar over the top before serving gives these more of a bakery-style feel.
• Use salted butter instead: If you only have salted butter, just reduce the added salt slightly in the crumb mixture.
• Add berries: Fresh raspberries or blueberries scattered over the lemon filling before baking taste really good with the citrus flavor.

FAQs

Do lemon crumb bars need to be refrigerated?

Yes, because the filling is made with sweetened condensed milk and egg yolks, these bars should be stored in the refrigerator. I actually think they taste best served chilled.

Can I freeze lemon crumb bars?

Yes, these freeze really well. Once they’re fully chilled, wrap them tightly or place them in an airtight container and freeze for up to 2 months.

Can I use bottled lemon juice?

You can, but fresh lemon juice gives the bars a much brighter and fresher flavor. If possible, I’d definitely recommend using fresh lemons.

Why are my lemon bars still jiggly in the middle?

A slight jiggle in the center is completely normal when they come out of the oven. They continue to set as they cool and chill in the refrigerator.

Can I make lemon crumb bars ahead of time?

Yes, and they’re actually perfect for making ahead. I usually make them the night before because the texture gets even better after they’ve chilled for a few hours.

How do I get clean slices?

I find it helps to chill the bars completely before slicing. Using a sharp knife and wiping it clean between cuts also makes a big difference.

Can I add lemon zest to the filling?

Absolutely. If you love strong lemon desserts, adding a little fresh lemon zest gives these even more citrus flavor.

What’s the difference between lemon bars and lemon crumb bars?

Traditional lemon bars usually have a shortbread-style crust and a smooth top layer, while lemon crumb bars have a buttery crumb topping baked over the lemon filling.