Irresistible Blueberry Crumble Bars Recipe to Delight You

Name: Irresistible Blueberry Crumble Bars
Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Cuisine: American
Ingredients: 2 cups fresh blueberries; 1/2 cup unsalted butter, melted; 1/2 cup granulated sugar; 1/4 cup brown sugar; 1 cup all-purpose flour; 1/2 cup rolled oats (old-fashioned); 1 tsp baking powder; 1/4 tsp salt; 1 tbsp lemon juice

Published: July 3, 2025

by Mia Hanry

Why You'll Love This Recipe

These blueberry crumble bars are simple to make and require minimal ingredients
Their sweet-tart flavor profile makes them irresistible to all ages, ensuring happy faces at every gathering
Visually appealing with their golden crumble topping, they are perfect for any occasion, from casual snacks to fancy brunches

I remember the first time I made blueberry crumble bars; my friends devoured them in minutes! Their wide eyes and satisfied smiles said it all.

Blueberry Crumble Bars Recipe

Essential Ingredients

Here’s what you’ll need to make this delicious dish:

Fresh Blueberries: Look for plump, vibrant berries for the best flavor; frozen can work in a pinch.
Butter: Use unsalted butter for better control over seasoning; it adds richness to the crust.
Granulated Sugar: This sweetens both the blueberry filling and the crumb topping perfectly.
Brown Sugar: Adds a deeper sweetness and moisture to the crumble topping.
All-Purpose Flour: Essential for binding everything together; sift it for a lighter texture.
Oats: Rolled oats give a hearty texture to the crumble; use old-fashioned for best results.
Baking Powder: Helps the bars rise slightly, giving them an airy feel.
Salt: Just a pinch enhances all flavors beautifully without being detected.
Lemon Juice: Brightens up the blueberry mixture and balances sweetness with its tartness.

The full ingredients list, including measurements, is provided in the recipe card directly below.

Let’s Make it Together

Prepare Your Equipment: Preheat your oven to 350°F (175°C) and line an 8×8-inch baking dish with parchment paper for easy removal later.

Create the Crust Mixture: In a large bowl, combine melted butter, granulated sugar, brown sugar, flour, oats, baking powder, and salt until crumbly yet cohesive.

Press into Baking Dish: Transfer about two-thirds of this mixture into your prepared baking dish. Press firmly to form an even layer that creates a solid base.

Add Blueberry Filling: In another bowl, gently toss fresh blueberries with lemon juice and one tablespoon of sugar. Spread this delicious mixture evenly over your crust layer.

Add Crumble Topping: Sprinkle the remaining crumb mixture evenly over the blueberries. It should cover them generously – think snow on a mountain!

Bake Until Golden: Bake in your preheated oven for 35-40 minutes or until golden brown. As it bakes, enjoy the heavenly aroma filling your home.

Once baked, let them cool before slicing into squares. Trust me; patience is key here!

Your blueberry crumble bars will become your new go-to dessert! Enjoy every crumb!

You Must Know

Blueberry crumble bars are the ultimate treat; they combine a sweet, tangy filling with a buttery, crumbly topping
Perfect for dessert or a snack that will impress guests and family alike
The aroma while baking?
Pure bliss!

Perfecting the Cooking Process

Start by preparing the crust and crumble topping first, then mix your blueberry filling. Assemble everything in layers, bake until golden brown, and enjoy the heavenly smell wafting through your kitchen.

Add Your Touch

Consider swapping blueberries for other berries like raspberries or strawberries. You can also add lemon zest to enhance flavor or sprinkle nuts on top for added crunch. Personalize this recipe to your heart’s content!

Storing & Reheating

Store bluebery crumble bars in an airtight container at room temperature for up to three days. For longer storage, refrigerate them for a week. Reheat them gently in the oven to regain that fresh-baked taste.

Chef's Helpful Tips

Use fresh blueberries for the best flavor; frozen can work but may make them mushy
Ensure your butter is cold when making the crumble for a perfect texture
Don’t skip chilling your dough—it enhances the flavor and texture significantly!

I once made these blueberry crumble bars for a picnic, and they disappeared faster than I could say “delicious.” Friends kept asking for seconds, leading to my new title: “Blueberry Bar Queen”!

FAQ

Can I use frozen blueberries for blueberry crumble bars?

Yes, frozen blueberries are acceptable but may result in a softer texture.

How do I know when my blueberry crumble bars are done?

They should be golden brown on top and bubbling around the edges when ready.

Can I make these blueberry crumble bars gluten-free?

Absolutely! Substitute regular flour with gluten-free flour for delicious results.

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