Lemon Crumb Bars

When life gives you lemons, make Lemon Crumb Bars.

These easy-to-make treats combine a buttery, golden crust with a creamy lemon filling that’s perfectly tart and sweet.

Whether you’re serving dessert after dinner or prepping snacks for a summer picnic, these bars always steal the spotlight.

Let’s dive into a recipe that brings sunshine to every bite.

Why You’ll Love This Recipe

Simple ingredients – Most are pantry staples

Two layers of goodness – Buttery crumb base and topping

Lusciously tangy filling – Made with real lemon juice

Great for any season – Refreshing in summer, cozy in winter

Make-ahead friendly – Chill and slice when ready

What You’ll Need (Ingredient Highlights)

Here’s a quick rundown of what makes these bars shine:

Flour – Forms the base of the crumb

Melted butter – Ensures a tender, crisp crust

Sweetened condensed milk – Creamy and smooth, perfect for lemon filling

Lemon juice – Fresh is best for that bright flavor

Egg yolks – Help create a rich, custard-like center

Brown and white sugar – A balanced sweetness and depth

Pro Tips Before You Start

Use freshly squeezed lemon juice – Bottled won’t give the same zing

Let the filling cool fully – So the bars slice neatly

Don’t skip the chill time – Essential for setting the texture

Use parchment paper – For easy removal from the pan

Mix crust gently – Just until crumbly, don’t overwork

How to Make Lemon Crumb Bars

Step 1 – Prep the Oven and Pan

Preheat your oven to 350°F (175°C).

Line a 9×9-inch square baking dish with parchment paper, leaving extra hanging over the edges for easy removal later.

Step 2 – Make the Crust

In a large bowl, mix the flour, white sugar, brown sugar, salt, and baking powder.

Stir in the melted butter until the mixture forms coarse crumbs.

Press two-thirds of this mixture into the bottom of your lined pan.

Firmly press it down using the bottom of a measuring cup.

Bake for 15 minutes, then remove from the oven and set aside.

Step 3 – Prepare the Lemon Filling

In another bowl, whisk together the sweetened condensed milk, egg yolks, heavy cream, and salt until smooth.

Slowly whisk in the lemon juice.

The mixture will thicken slightly as the citrus reacts with the milk.

Step 4 – Assemble the Layers

Pour the lemon mixture evenly over the hot crust.

Spread with a spatula for a smooth surface.

Sprinkle the remaining crumb mixture over the top of the filling.

Step 5 – Bake Again

Return the pan to the oven and bake for another 15–20 minutes, or until the top is golden and the filling is set.

Step 6 – Cool and Chill

Let the bars cool completely at room temperature, then cover and refrigerate for at least 4 hours (overnight is even better).

Step 7 – Slice and Serve

Lift the bars out of the pan using the parchment.

Slice into squares and enjoy chilled!

What to Serve It With

Lemon crumb bars are wonderful on their own, but they pair beautifully with:

Iced tea or lemonade

Fresh berries

A dollop of whipped cream

A scoop of vanilla ice cream

Perfect for a summer brunch, afternoon tea, or light dessert after dinner.

Variations / Substitutions

Add lemon zest – Mix into the filling or crust for extra lemon flavor

Try orange or lime – Swap out the lemon juice for other citrus

Gluten-free version – Use a 1:1 GF baking flour blend

Berry twist – Add a layer of blueberry jam between crust and filling

Make it coconutty – Mix shredded coconut into the topping

Storage & Leftovers

Fridge: Store in an airtight container for up to 5 days

Freezer: Freeze in a single layer for up to 2 months.

Thaw in the fridge before serving

Make ahead: Prepare a day early, chill overnight, and slice the next day

They’re even better the next day as the flavors continue to develop.

FAQs

Can I use bottled lemon juice?
Fresh is best, but if you’re in a pinch, use bottled – just be sure it’s 100% juice with no additives.

Do I have to use both types of sugar in the crust?
Not strictly, but using both gives you better texture and flavor.

White sugar crisps, brown adds depth.

Can I double the recipe?
Yes! Use a 9×13 pan, and adjust baking time slightly.

Why did my filling not set?
Make sure to bake it long enough and chill for at least 4 hours.

Don’t skip the cooling time.

Can I make these with limes or oranges?
Absolutely. You can substitute lime juice or orange juice for a different citrus twist.

Can I add a glaze?
Yes, a simple powdered sugar and lemon juice drizzle is a lovely finishing touch.

How many bars does this make?
It yields about 12 bars from a 9×9 pan, depending on how you slice.

Final Thoughts

These Lemon Crumb Bars are sunshine in dessert form.

They’re simple, bright, and perfect for citrus lovers.

With a buttery base, creamy filling, and sweet crumble topping, they check all the boxes for a satisfying bite.

Keep this recipe in your back pocket for picnics, potlucks, or when that lemon craving hits—you won’t be disappointed!