American Dessert

Lemon Crumb Bars Recipe

Bright citrus meets sweet, buttery crumble in these easy no bake lemon bars that are perfect for potlucks and picnics.

Imagine a tender vanilla shortbread base giving way to a lush, tangy lemon filling, crowned with a crisp, buttery crumb that smells like sunshine as soon as you open the oven.

I love making these when I want something bright and desserts that feel fancy but are simple to assemble, they are great for springtime, backyard gatherings, or when you just need a little citrus lift in your week.

One bite and you will feel like you are on vacation, they are the kind of treat you photograph, share with friends, and secretly wish were on the menu at your favorite cafe.

Recipe at a Glance

⏱Prep Time20 mins

🔥Cook Time25 mins

🕐Total Time45 mins plus chilling

🍰Servings12 bars

🇺🇸CuisineAmerican

🔢Calories~220 per bar

Ingredients

Crust

1 1/2 cups graham cracker crumbs

1/3 cup granulated sugar

6 tablespoons unsalted butter, melted

Lemon Filling

1 1/2 cups granulated sugar

1/3 cup all-purpose flour

1/4 teaspoon salt

1 cup fresh lemon juice

3 large eggs

1 teaspoon vanilla extract

1 teaspoon lemon zest

Lemon Crumble Topping

1/2 cup all-purpose flour

1/4 cup granulated sugar

2 tablespoons packed brown sugar

1/4 teaspoon ground cinnamon

3 tablespoons unsalted butter, cold and cubed

Substitutions & Variations

★Swap graham crackers for gluten free cookies to make these gluten free.

★Use olive oil in place of melted butter in the crust for a slightly nutty flavor.

★Replace some lemon juice with lime juice for a tropical citrus twist.

★Use a gluten free flour blend in both the filling and crumble for a gluten free version.

★Substitute salted butter and reduce added salt if you prefer a richer taste.

Step-by-Step Instructions

1

Prepare the crust

In a medium bowl, stir together the graham cracker crumbs and sugar, then pour in the melted butter and mix until the crumbs look wet and clump together. Press the mixture firmly into the bottom of a 9x13 inch baking dish to form an even base, and bake for 8 minutes to set it slightly.

2

Make the lemon filling

In a separate large bowl, whisk the sugar, flour, and salt until there are no lumps. Stir in the lemon juice, eggs, vanilla, and lemon zest until smooth, then pour this filling evenly over the warm crust.

3

Prepare the crumble topping

In a small bowl, mix the flour, granulated sugar, brown sugar, and cinnamon. Cut in the cold, cubed butter with your fingers or a pastry cutter until the mixture resembles coarse crumbs.

4

Assemble the bars

Sprinkle the lemon crumble topping evenly over the filling, gently covering the surface without pressing too hard so the topping stays light and textured.

5

Bake until golden

Bake in the preheated oven for 20 to 25 minutes, or until the edges are set, the filling is softly bubbling, and the crumble is deep golden brown.

6

Cool slightly before chilling

Let the lemon crumb bars cool on the counter for about 10 minutes, then transfer to the refrigerator to chill for at least 2 hours or up to overnight for best flavor.

7

Cut clean servings

Run a thin knife around the edges of the dish and between servings, wiping the knife with a warm cloth between cuts to keep the bars looking neat.

8

Store leftovers

Cover the bars and keep them in the refrigerator for up to 4 days, or freeze for longer storage and thaw in the fridge overnight.

9

Add optional garnish

Just before serving, dust the top with powdered sugar or add a few fresh berries for extra color and freshness.

10

Enjoy your bright dessert

Serve the lemon crumb bars on a pretty platter, invite friends to linger over coffee, and savor the zesty, crumbly goodness together.

Pro Baker Tips

✓For extra lemony flavor, add 1 tablespoon of lemon juice to the filling after mixing.

✓Use parchment paper in the pan for easy lifting and cleanup.

✓Let the bars cool completely before slicing for clean edges.

✓Taste the filling before baking and adjust sweetness by adding a little more sugar if needed.

Storage & Serving Notes

◆Refrigerate in an airtight container for up to 4 days.

◆Freeze in a sealed bag for up to 2 months; thaw in the refrigerator before serving.

◆Avoid storing at room temperature because the filling contains eggs.

Serving Suggestions

These lemon crumb bars are as pretty as they are delicious to serve.

›Place 2 to 3 bars on a small plate with a dollop of whipped cream.

›Serve with a side of fresh berries or a light citrus sorbet.

›Pack a single bar in a lunch for a bright midweek treat.

›Set out a platter of bars at your next outdoor gathering for an easy crowd pleaser.

Frequently Asked Questions

Can I make these lemon bars without a springform pan?

Yes, a 9x13 inch baking dish works perfectly and makes cutting into neat bars easy.

Why did my filling turn out runny?

Let the bars chill for at least 2 hours after baking; if it is still loose, a quick chill will firm it up.

Can I use bottled lemon juice?

Fresh lemon juice gives the best flavor, but bottled works in a pinch if you are short on time.

Can I make a gluten free version?

Yes, use gluten free graham crackers or a gluten free cookie blend for the crust and a gluten free flour blend for the filling and topping.

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Go Make It!

I hope you enjoy baking and sharing these lemon crumb bars, they are a lovely way to bring bright, cheerful treats to your table any time of year.