Ultimate Zesty Lemon Crumb Bars

Hey there, baking buddies! Are you ready for a burst of sunshine on a plate? These lemon crumb bars are everything you crave in a dessert – tangy, sweet, buttery, and utterly irresistible. I’m talking a perfect balance of a melt-in-your-mouth crumb topping and a bright, zesty lemon filling that will transport you straight to a sun-drenched lemon grove.

What makes *this* recipe so special? It’s the simplicity! You probably already have most of the ingredients in your pantry. The whole process is surprisingly quick and easy, perfect for a weeknight treat or a delightful addition to your next gathering. Imagine the taste: that first bite of the slightly crunchy, buttery crumb topping giving way to the intensely lemony, creamy filling. It’s a textural and flavor explosion that will leave you wanting more.

These lemon crumb bars evoke a feeling of pure joy and happiness. They’re bright, cheerful, and undeniably delicious. They’re the perfect treat to share with friends and family, or to simply enjoy a quiet moment with a cup of tea or coffee. Seriously, you’ll be making these again and again – I promise!

What You’ll Need

Gathering your ingredients is half the fun! Here’s what you’ll need to create these amazing lemon crumb bars:

  • Unsalted Butter (1 cup, softened): Soft butter is key for a tender and flaky crust and crumb topping. Let it sit out at room temperature for about an hour before you start.
  • All-Purpose Flour (2 ½ cups): Provides the structure for both the crust and the crumb topping. Make sure to measure it correctly, using the spoon and level method.
  • Granulated Sugar (1 ¾ cups): Balances the tartness of the lemon with delightful sweetness. Use granulated sugar for the best results.
  • Salt (¼ teaspoon): Enhances the flavors of both the crust and the filling. Don’t skip this!
  • Large Eggs (4): Bind the lemon filling together, creating a creamy and rich texture. Use large eggs for consistent results.
  • Lemon Juice (½ cup, freshly squeezed): The star of the show! Freshly squeezed lemon juice provides the intense, bright lemon flavor we all crave. About 3-4 lemons should do the trick.
  • Lemon Zest (from 2 lemons): Adds extra zing and aromatic depth to the lemon filling. Make sure to zest only the outer yellow layer, avoiding the white pith.

Step-by-Step Instructions

Let’s get baking! Follow these steps for perfectly delicious lemon crumb bars:

  1. Prepare the Crust and Crumb Topping: Preheat your oven to 350°F (175°C). In a large bowl, cream together the softened butter and ½ cup of granulated sugar until light and fluffy. Gradually add 2 cups of all-purpose flour and ¼ teaspoon of salt, mixing until just combined. Reserve about ⅔ of the mixture for the crumb topping; press the remaining dough into the bottom of a greased 9×13 inch baking pan.
  2. Make the Lemon Filling: In a separate bowl, whisk together the 4 large eggs and 1 ½ cups granulated sugar until pale and slightly thickened. Whisk in the ¼ cup of all-purpose flour until no lumps remain. Stir in the ½ cup of freshly squeezed lemon juice and the zest of 2 lemons.
  3. Assemble and Bake: Pour the lemon filling evenly over the pressed crust. Sprinkle the reserved crumb topping evenly over the filling.
  4. Bake: Bake for 30-35 minutes, or until the topping is golden brown and the filling is set. Insert a toothpick into the center; it should come out with just a few moist crumbs attached.
  5. Cool and Cut: Let the bars cool completely in the pan before cutting into squares. This allows the filling to set properly and prevents crumbling.

Tip: For an extra-flaky crust, chill the dough for at least 30 minutes before baking. This helps prevent shrinkage and ensures a perfectly crisp bottom.

Tips for Success

To ensure your lemon crumb bars turn out perfectly every time, here are a few helpful tips:

Use fresh lemons for the best flavor. The vibrant acidity of fresh lemon juice is crucial for a truly zesty filling. Don’t substitute bottled juice!

Make sure your butter is softened but not melted. Melted butter will result in a crumbly crust that doesn’t hold its shape well.

Don’t overmix the batter. Overmixing can lead to tough bars. Mix until just combined.

Let the bars cool completely before cutting. This prevents them from crumbling and ensures clean cuts.

Store leftover bars in an airtight container at room temperature for up to 3 days, or in the refrigerator for up to a week.

Variations to Try

Feeling adventurous? Try these fun variations on our classic lemon crumb bars:

Blueberry Lemon Crumb Bars: Add ½ cup of fresh or frozen blueberries to the lemon filling for a burst of fruity flavor.

Raspberry Lemon Crumb Bars: Swap the blueberries for raspberries for a tart and sweet twist.

Orange Lemon Crumb Bars: Add the zest and juice of one orange to the lemon filling for a citrusy blend.

Gluten-Free Lemon Crumb Bars: Substitute the all-purpose flour with a gluten-free blend. Be sure to use a blend specifically formulated for baking.

Storing and Reheating

To keep your lemon crumb bars fresh and delicious, store them properly. At room temperature in an airtight container, they’ll stay fresh for up to 3 days. For longer storage, refrigerate them for up to a week. You can also freeze them – wrap them tightly in plastic wrap and then foil before storing in a freezer-safe bag. They’ll keep for up to 2 months in the freezer. To reheat, simply let them come to room temperature or warm them gently in the microwave for a few seconds.

Frequently Asked Questions

Q: Can I use frozen lemon juice instead of fresh? A: While you can, fresh lemon juice provides the brightest, most vibrant flavor. Frozen lemon juice can sometimes have a slightly less intense flavor.

Q: How long do the bars keep? A: At room temperature, they’ll last for about 3 days. In the refrigerator, they’ll stay good for up to a week. And in the freezer, they’ll keep for about 2 months.

Q: Can I make these ahead of time? A: Yes! You can bake the bars a day or two in advance. Just store them properly as described above.

Q: What if my crumb topping is too dry? A: Add a tablespoon or two of milk or cream to the crumb topping mixture if it seems too dry.

The Final Word

These ultimate zesty lemon crumb bars are a true baking masterpiece – easy to make, incredibly delicious, and perfect for any occasion. The combination of the buttery, crunchy crumb topping and the bright, tangy lemon filling is simply divine. So, what are you waiting for? Give this recipe a try and let me know what you think in the comments below! Don’t forget to rate the recipe and share your photos on social media – I can’t wait to see your creations! Happy baking!

Lemon Crumb Bars – Don’t LOSE this Recipe 😋

Tangy lemon filling topped with a buttery crumb topping.
Prep Time 20 minutes
Cook Time 35 minutes
Servings 12 bars
Calories 300 kcal

Equipment

  • 9×13 inch baking pan or similar sized pan
  • Mixing bowls

Ingredients
  

Crust and Crumb Topping

  • 1 cup unsalted butter softened
  • 2 cups all-purpose flour
  • 0.5 cup granulated sugar
  • 0.25 teaspoon salt

Lemon Filling

  • 4 large eggs
  • 1.5 cups granulated sugar
  • 0.25 cup all-purpose flour
  • 0.5 cup lemon juice freshly squeezed, about 3-4 lemons
  • 2 lemons zest

Instructions
 

  • Preheat oven to 350°F (175°C). Grease and flour a 9×13 inch baking pan.
  • Make the crumb topping: In a medium bowl, cream together the softened butter and sugar until light and fluffy. Add the flour and salt; mix until just combined.
  • Press half of the crumb mixture into the bottom of the prepared pan.
  • Make the lemon filling: In a large bowl, whisk together the eggs, sugar, and flour until smooth. Stir in the lemon juice and zest.
  • Pour the lemon filling over the crust in the pan.
  • Crumble the remaining crumb mixture evenly over the lemon filling.
  • Bake for 30-35 minutes, or until the topping is golden brown and the filling is set.
  • Let cool completely before cutting into bars.

Notes

Recipe adapted from a family favorite. Enjoy!

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