Perfect Summer Recipe For Blueberry Crumble Bars

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Updated June 26, 2021

Are you looking for a relatively simple, fresh, and delicious dessert that uses fresh summer berries?

Look no further than this wonderful recipe for Blueberry Crumble Bars.

Blueberry Crumble Bars have become an absolute dessert staple with our family.

With a super tasty crust jam-packed with a ton of crumbly bits and a perfect blueberry filling, you can’t go wrong with these!

This beautiful, flavorful dessert works perfectly as a follow-up to just about any classic summer meal, especially when paired with a nice scoop of ice cream and a handful of fresh blueberries.

This recipe makes a HUGE serving so there’s a very good chance you end up with leftovers but trust me, they store amazingly in the freezer and are super simple to reheat in the oven whenever you need to!

Recipe For blueberry crumble bars

Ingredients:

Crumble And Crust

You really don’t need many ingredients for the perfect crust, and they don’t take much preparation either!

Crumbly, chewy, and with a perfect mix of flavors, this crust is super easy to make.

All you need for ingredients are:

1 1/2 cups all-purpose flour

1 1/2 cups old fashioned rolled oats

3/4 cups light brown sugar

1/2 teaspoon cinnamon

1/2 teaspoon kosher salt

1 cup cold butter, cubed

Blueberry Filling

The obvious star of this dessert, this blueberry filling is super easy to make!

Super sweet, fruity, and with a little citrus hit from the lemon juice, the texture of this filling contrasts amazingly with the crumbly, chewy crust.

With only four ingredients this filling is incredibly simple to make.

Just use these ingredients:

3 tablespoons cornstarch

2 1/2 cups blueberries

1/2 cup granulated sugar

1 tablespoon lemon juice

DIRECTIONS

Once you have all your ingredients gathered, there are only a few simple steps to make these wonderful Blueberry Crumble Bars.

For the crust:

First, you’ll want to preheat your oven to 350 degrees Fahrenheit.

Before you start mixing your ingredients, prepare a baking sheet by lining it with parchment paper and then coat it with nonstick spray.

Once that’s done, set the sheet aside and get a bowl so you can start mixing your dry ingredients.

In a large bowl, start by combining the flour, rolled oats, brown sugar, cinnamon, and salt.

Once those are roughly combined, add in the cold butter cubes and mix the entire bowl together until the texture roughly resembles crumbly sand.

After that, you’re good to go!

Now that your ingredients are properly mixed and ready to go it’s time to start really forming our bars!

You’re going to want to reserve 2- 2 ½ cups of the mixture and then press the remaining mix into the bottom of the prepared pan.

It doesn’t have to be perfectly smooth and uniform (you explicitly want those noticeable crumbly bits!) but you definitely want to form a solid layer of the crust so your bars don’t break apart.

Once you’re done pressing your crust into the pan, you’re ready to start on the filling!

We’ve already touched on the filling earlier in the recipe, but it needs to be said again: this filling is AMAZING.

It’ll be hard to resist trying out at least a little bit before you’ve put it onto the crust, and I can’t really blame you if you sneak a taste!

For the filling:

First, combine the cornstarch and sugar in a large bowl.

Once it’s thoroughly combined together, add in the lemon juice.

Once those ingredients are mixed, gently mix in the blueberries and stir until they’re coated in the sugar mixture and continue until just combined.

Now you’re ready to start adding the filling to your crust!

Now comes the fun part: doing your best to evenly distribute the filling across the crust to give you nice, relatively uniform filling in the bars.

Don’t be too upset if you can’t get it perfect, the Blueberry Crumble Bars will still turn out absolutely wonderful.

First, spread the blueberries evenly across the bottom layer of crust.

Once you’re confident you’ve got it roughly even, sprinkle and lightly press the remaining crust you set aside across the blueberry filling.

Now that you’ve got it ready, it’s time to move on to baking the bars!

Now that your bars are ready to start baking, carefully place them into your preheated oven.

Once you’ve got them in, bake for 40 to 45 minutes or until you start seeing noticeable bubbles on the blueberry layer.

Bake for 40-45 minutes or until the blueberry layer starts to bubble.

You definitely want to keep an eye on these once you get later into the process, as it would be very easy to overcook or even burn the top crumbles.

Once you’re confident they’re done, remove them from the oven and allow them to cool completely.

When the Blueberry Crumble Bars are thoroughly cooled, cut, and serve.

You’re going to want to cut them into relatively uniform squares, though it’s entirely up to you!

Heat slightly and serve on a plate with a scoop of ice cream for a fruity, flavor-packed, and incredibly sweet dessert, or just have one or two on their own as a treat.

You can also throw a few fresh blueberries on to add a bit of a different blueberry flavor.

There are a ton of different ways to serve these and you really can’t go wrong with any of them.

Yield: 24 Bars

Perfect Recipe For Blueberry Crumble Bars

Print

Prep Time 20 minutes

Cook Time 45 minutes

Additional Time 15 minutes

Total Time 1 hour 20 minutes

Ingredients

• Crumble And Crust
• 1 1/2 cups all-purpose flour
• 1 1/2 cups old fashioned rolled oats
• 3/4 cups light brown sugar
• 1/2 teaspoon cinnamon
• 1/2 teaspoon kosher salt
• 1 cup cold butter,cubed
• Blueberry Filling
• 3 tablespoons cornstarch
• 2 1/2 cups blueberries
• 1/2 cup granulated sugar
• 1 tablespoon lemon juice

Instructions

1. For the crust:
2. Preheat oven to 350 degrees.
3. Prepare a baking sheet by lining with parchment paper and coat with nonstick spray and set aside.
4. In a large bowl, combine the rolled oats, flour, oats, brown sugar, cinnamon and salt. Add in the cold butter cubes last and mix until the texture resembles a crumbly sand.
5. Reserve 2- 2 ½ cups of the mixture and press the remaining mix into the bottom of the prepared pan. 
6. For the filling:
7. In a large bowl, mix together the cornstarch and sugar. Add in the lemon juice. Gently mix in the blueberries and coat in the sugar mixture until just combined.

Nutrition Information:

Yield:

24

Serving Size:

1
Amount Per Serving: Calories: 98Total Fat: 0gSaturated Fat: 0gTrans Fat: 0gUnsaturated Fat: 0gCholesterol: 0mgSodium: 47mgCarbohydrates: 22gFiber: 1gSugar: 11gProtein: 2g

Final thoughts

We hope you and your family enjoy these Blueberry Crumble Bars as much as we did!

However, you serve them, regardless of whether it’s as a dessert, a rather sweet breakfast, or just like a fruity, flavor-packed snack,  you can’t go wrong with these Blueberry Crumble Bars.

If you have leftovers, feel free to bag and freeze them!

Just be sure to allow them to properly cool before you toss them in.

Thank you so much for reading, be sure to check out some of our other recipes for some super quick and easy meals, sides, desserts, and more!