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Home » Recipe Index » Homemade Lemon Crumb Bars

Homemade Lemon Crumb Bars

May 2, 2025 by Emilia

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These Homemade Lemon Crumb Bars are the perfect blend of creamy and tangy flavors, making them a delightful treat for any occasion. Whether you’re hosting a summer picnic or looking for a sweet dessert to end your dinner, these bars will surely impress. The buttery brown sugar crust and crumbly oat topping complement the zesty lemon filling beautifully, creating a dessert that is both refreshing and satisfying.

Homemade Lemon Crumb BarsPin

Why You’ll Love This Recipe

  • Easy to Make: With simple ingredients and straightforward steps, you can whip up these bars in no time.
  • Zesty Flavor: The combination of fresh lemon juice and zest creates a bright and lively taste that’s perfect for lemon lovers.
  • Versatile Dessert: These bars are great for any occasion—serve them at parties, potlucks, or as a sweet snack at home.
  • Make Ahead Option: Prepare these bars a day in advance to deepen their flavors and enhance their texture.
  • Customizable Topping: Swap out oats for crushed graham crackers to change up the texture while keeping the delicious flavor intact.

Tools and Preparation

To make your baking experience smooth, having the right tools is essential. Here’s what you’ll need to create your Homemade Lemon Crumb Bars.

Essential Tools and Equipment

  • 8×8-inch baking pan
  • Mixing bowls
  • Whisk
  • Parchment paper or foil
  • Nonstick spray

Importance of Each Tool

  • 8×8-inch baking pan: This size ensures that your bars cook evenly and achieve the perfect thickness.
  • Mixing bowls: Having separate bowls helps keep dry and wet ingredients organized as you prepare your batter.
  • Whisk: A whisk allows for thorough mixing, ensuring that all components blend smoothly without lumps.

Ingredients

These Lemon Crumb Bars feature a creamy, tangy lemon filling sandwiched between a buttery brown sugar crust and a crumbly oat topping. They are simple to make and guaranteed to impress with their delicious flavor and perfect texture.

For the Crust and Topping:

  • 1 cup all-purpose flour
  • 1 cup old-fashioned oats
  • 1/4 teaspoon salt
  • 3/4 teaspoon baking soda
  • 10 tablespoons unsalted butter, melted
  • 1/2 cup light brown sugar, packed
  • 1 teaspoon pure vanilla extract

For the Lemon Filling:

  • 1 (14 oz) can sweetened condensed milk
  • 2 tablespoons sour cream (or plain yogurt)
  • 1 large egg yolk
  • 1/4 cup freshly squeezed lemon juice
  • 1 tablespoon finely grated lemon zest
  • 1/2 teaspoon vanilla extract
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How to Make Homemade Lemon Crumb Bars

Step 1: Preheat the Oven

Preheat the oven to 350°F (175°C).

Step 2: Prepare the Pan

Line an 8×8-inch baking pan with foil or parchment paper, leaving an overhang on two sides. This overhang will help you lift the bars out later. Spray the lined pan with nonstick spray.

Step 3: Make the Crust & Topping

In a medium bowl, whisk together the flour, oats, salt, and baking soda. In another large bowl, whisk together the melted butter, brown sugar, and vanilla extract until fully combined. Stir the dry ingredients into this mixture until well mixed.

Step 4: Form the Crust

Remove about 3/4 cup of this mixture and set it aside for later use as crumb topping. Press the remaining dough evenly into the prepared pan. Bake this crust in the oven for 10 minutes until lightly golden.

Step 5: Prepare the Lemon Filling

While your crust bakes, combine sweetened condensed milk, sour cream (or yogurt), egg yolk, lemon juice, lemon zest, and vanilla extract in a bowl. Whisk until smooth.

Step 6: Assemble & Bake

Once your crust is done baking, carefully pour the lemon filling over it. Spread it evenly but gently since the crust is still soft. Crumble the reserved dough over this filling. Return to oven and bake for an additional 17-20 minutes until golden on top.

Step 7: Cool & Serve

Allow your pan of bars to cool completely on a wire rack. Once cooled, use the parchment or foil overhang to lift them from the pan. Slice into squares and enjoy!

How to Serve Homemade Lemon Crumb Bars

These delightful Homemade Lemon Crumb Bars are perfect for any occasion. Their tangy lemon filling and buttery crust make them a hit for gatherings or a sweet treat at home. Here are some serving suggestions to elevate your dessert experience.

Enjoy with Whipped Cream

  • Add a generous dollop of freshly whipped cream on top for a creamy contrast that complements the tartness of the lemon.

Pair with Fresh Berries

  • Serve alongside a mix of fresh strawberries, blueberries, or raspberries to enhance the fruity flavors and add a pop of color.

Dust with Powdered Sugar

  • A light dusting of powdered sugar gives these bars an elegant touch and adds sweetness without overpowering the lemon flavor.

Drizzle with Lemon Glaze

  • Create a simple lemon glaze using powdered sugar and lemon juice for an extra zing that ties the flavors together beautifully.

Serve with Ice Cream

  • A scoop of vanilla ice cream pairs wonderfully with the warm bars, creating a deliciously creamy contrast to the crumbly topping.

Accompany with Tea or Coffee

  • For a cozy treat, serve these bars with a cup of hot tea or coffee. The warmth of the beverage balances the cool, refreshing taste of the bars.

How to Perfect Homemade Lemon Crumb Bars

Creating perfect Homemade Lemon Crumb Bars is all about attention to detail. Here are some tips to ensure your bars turn out just right.

  • Use Fresh Lemons – Freshly squeezed lemon juice and zest will provide the brightest flavor compared to bottled alternatives.
  • Don’t Overmix – When combining wet and dry ingredients, mix just until incorporated to keep your crust tender and crumbly.
  • Chill Before Cutting – Let the bars cool completely before slicing. Chilling them in the fridge for an hour helps them set properly for cleaner cuts.
  • Check for Doneness – The filling should be set but still slightly jiggly in the center when you take it out; it will firm up as it cools.
  • Store Correctly – Keep your bars in an airtight container in the refrigerator to maintain freshness and prevent them from drying out.
  • Experiment with Flavors – Feel free to add different extracts like almond or coconut for unique flavor variations!
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Best Side Dishes for Homemade Lemon Crumb Bars

To complement your Homemade Lemon Crumb Bars, consider serving them with some delightful side dishes that enhance their zesty flavor. Here’s a list of side dishes that work beautifully together.

  1. Fruit Salad – A refreshing mix of seasonal fruits adds brightness and balances sweetness.
  2. Greek Yogurt – A dollop of Greek yogurt provides creaminess and tang that pairs well with lemon.
  3. Cheese Platter – Include light cheeses like goat cheese or ricotta for a savory contrast to the sweet bars.
  4. Lemon Sorbet – This icy treat echoes the lemon theme and cleanses the palate between bites.
  5. Arugula Salad – A simple arugula salad with lemon vinaigrette brings peppery notes and lightness.
  6. Pistachio Nuts – Roasted pistachios add crunch and nutty flavor, complementing the bar’s texture nicely.
  7. Chilled Tea – Iced herbal tea offers refreshing sips that pair well with desserts without overshadowing their flavors.
  8. Chocolate Dipped Strawberries – The richness of chocolate contrasts beautifully with tangy lemon, making this an indulgent pairing.

Common Mistakes to Avoid

Making Homemade Lemon Crumb Bars can be a delightful experience, but there are a few common mistakes to watch out for.

  • Using cold butter: Cold butter can lead to a tough crust. Always use melted butter for a soft and buttery texture.
  • Skipping the zest: Not adding lemon zest will reduce the flavor intensity. Zest the lemon for an extra burst of citrus.
  • Overbaking the bars: Overbaking can make your bars dry. Keep an eye on them, and remove them from the oven when they are lightly golden.
  • Not using fresh lemon juice: Bottled lemon juice lacks the fresh taste that elevates these bars. Always opt for freshly squeezed lemon juice.
  • Ignoring cooling time: Cutting into warm bars can cause them to crumble. Let them cool completely before slicing.

Storage & Reheating Instructions

Refrigerator Storage

  • Store your Homemade Lemon Crumb Bars in an airtight container.
  • They will remain fresh for up to 5 days in the refrigerator.

Freezing Homemade Lemon Crumb Bars

  • Wrap each bar individually in plastic wrap for best results.
  • Place them in a freezer-safe bag or container.
  • They can be frozen for up to 3 months.

Reheating Homemade Lemon Crumb Bars

  • Oven: Preheat your oven to 350°F (175°C). Place bars on a baking sheet and warm for about 10 minutes.
  • Microwave: Heat individual bars on a microwave-safe plate for about 15-20 seconds until warmed through.
  • Stovetop: Use a skillet over low heat, cover with a lid, and warm for about 5 minutes, checking frequently.
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Frequently Asked Questions

How long do Homemade Lemon Crumb Bars last?

Homemade Lemon Crumb Bars last up to 5 days in the refrigerator when stored properly.

Can I freeze Homemade Lemon Crumb Bars?

Yes! You can freeze these bars for up to 3 months by wrapping them tightly and storing in an airtight container.

What is the best way to serve Homemade Lemon Crumb Bars?

For an extra touch, dust with powdered sugar just before serving. This adds sweetness and enhances presentation.

Can I customize my Homemade Lemon Crumb Bars?

Absolutely! Feel free to add berries or nuts into the filling or change the crust by using crushed graham crackers instead of oats.

Final Thoughts

These Homemade Lemon Crumb Bars offer a perfect balance of tangy and sweet flavors, making them a delightful treat for any occasion. They are easy to customize with your favorite fruits or toppings, allowing you to enjoy endless variations. Give this recipe a try, and impress your family and friends with these delicious bars!


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Homemade Lemon Crumb Bars

Homemade Lemon Crumb Bars


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  • Author: Emilia
  • Total Time: 45 minutes
  • Yield: Approximately 8 servings 1x
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Description

Indulge in the bright and zesty flavors of Homemade Lemon Crumb Bars, a delightful dessert perfect for any occasion. These bars feature a buttery brown sugar crust topped with a creamy, tangy lemon filling, all finished with a crumbly oat topping. Whether you’re hosting a summer gathering or simply craving something sweet, these bars are sure to impress. Quick to prepare and easy to customize, they make an excellent treat for potlucks or cozy nights in. Experience the refreshing taste of citrus with every bite!


Ingredients

Scale
  • 1 cup all-purpose flour
  • 1 cup old-fashioned oats
  • 3/4 cup light brown sugar
  • 10 tablespoons unsalted butter (melted)
  • 1 (14 oz) can sweetened condensed milk
  • 1/4 cup freshly squeezed lemon juice
  • 1 tablespoon finely grated lemon zest
  • 1 large egg yolk

Instructions

  1. Preheat your oven to 350°F (175°C) and line an 8×8-inch baking pan with parchment paper.
  2. In one bowl, mix flour, oats, salt, and baking soda. In another bowl, combine melted butter, brown sugar, and vanilla.
  3. Combine the dry ingredients into the wet mixture until well mixed. Reserve 3/4 cup for topping.
  4. Press the remaining mixture into the pan and bake for about 10 minutes until lightly golden.
  5. Meanwhile, mix sweetened condensed milk, sour cream, egg yolk, lemon juice, zest, and vanilla until smooth.
  6. Pour lemon filling over crust before sprinkling reserved crumb topping on top; bake for an additional 17-20 minutes.
  7. Cool completely before slicing into squares.
  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 bar (approximately 70g)
  • Calories: 210
  • Sugar: 15g
  • Sodium: 120mg
  • Fat: 10g
  • Saturated Fat: 6g
  • Unsaturated Fat: 4g
  • Trans Fat: 0g
  • Carbohydrates: 30g
  • Fiber: 1g
  • Protein: 2g
  • Cholesterol: 30mg

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