Blueberry Crumble Bars

A shortbread-like cookie base + Blueberry Lemon filling + Crumble = an out of this world Gluten-Free, Vegan treat perfect for Summer!

Blueberry Crumble Bars
Blueberry Crumble Bars

Perfectly balanced, crowd pleasing and drool worthy!

You may have already tried our Raspberry Crumble Bars… I shared them just before Valentine’s Day and they have been a HUGE hit among our friends and family and they’ve been a big it with all of you!

Well I changed up the filling for Summer and they may be even better!

My husband, who’s from New England and a fan of all things blueberry, says they are his favorite dessert ever!

It is shortbread-like cookie base, a Blueberry Lemon filling + Crumble topping and it is out of this world YUMMY!

The cookie base has a nice buttery flavor and perfect texture that provides just enough crunch to balance the jammy filling, and the filling is just the right amount of sweet being balanced by a touch of lemon juice (I added a bit more lemon juice compared to the raspberry ones and it nicely balances the sweet blueberries), and the a crumble topping is the perfect finish!

Blueberry Crumble Bars

 

Plus they are gluten-free, vegan (that is dairy-free and egg-free) so they satisfy so many dietary needs or preferences.

And they are super easy to make!

They are made with 10 real, whole food ingredients: gluten-free all purpose flour (we use GF Jules, affiliate link), cane sugar, salt, dairy free butter (or regular butter), brown sugar, pecans, gluten-free old fashioned rolled oats, blueberry preserves, fresh blueberries and fresh lemon juice.

 

The shortbread cookie base is just 4 ingredients and comes together quickly. This is one of those baking instances where order of operations matters…. mix the dry ingredients, then mix in the butter 1 piece at a time.ย  Mix well and a dough will form.

 

While it bakes for just 15 minutes, you mix together the filling which is a blend of blueberry preserves, fresh blueberries and some fresh lemon juice.

And it’s finished with the crumble. The crumble is 4 ingredients, one being part of the base dough.

And it’s super easy to make: Top the baked cookie base with the filling, sprinkle with crumble and bake a short bit longer. That’s it!

These bars are a fan favorite getting rave reviews from everyone, which makes them perfect dessert for a entertaining or any time!

We will be making them over Memorial Day weekend, then they will be on repeat all summer for sure!

Hope you love them as much as we do!

Blueberry Crumble Bars

 

Recipe adapted from America’s Test Kitchen.

Scroll down for recipe and leave a comment if you try.

Recipe

5.0 from 3 reviews
Blueberry Crumble Bars
 
Prep time
Cook time
Total time
 
A shortbread-like cookie base + Blueberry Lemon filling + Crumble = an out of this world Gluten-Free, Vegan treat! Perfectly balanced and a total crowd pleaser! Recipe adapted from America's Test Kitchen.
Author:
Recipe type: Dessert, Cookies and Bars
Cuisine: Gluten-Free, Egg-Free, Dairy-Free and Vegan Optional
Serves: 16 bars
Ingredients
Cookie base (you will reserve ⅓ cup of the base dough for the topping)
  • 1½ cups gluten-free flour (with xanthan gum) (we used GF Jules, affiliate link)
  • ⅓ cup cane sugar
  • ¼ teaspoon salt
  • 8 tablespoons dairy free butter (or real butter), softened, cut into tablespoons (we used Earth Balance dairy-free, soy-free sticks) (NOTE: for a more buttery flavor, use 9 tablespoons of butter)
Crumble*
  • 2 tablespoons packed brown sugar
  • ⅓ cup pecans, finely chopped
  • ¼ cup gluten free old fashioned rolled oats
  • *plus ⅓ reserved cup of the cookie base dough
Blueberry filling
  • ¾ cup blueberry preserves
  • ¾ cup fresh blueberries
  • 3 teaspoons fresh lemon juice
Instructions
  1. Preheat oven to 375 degrees F
  2. Line 8 inch square baking pan with parchment paper such that the paper hangs over the edges OR is tucked in in such a way that you can lift the paper right out of the pan when the bars are done.
Make the cookie base
  1. Using a stand mixer or hand mixer, add flour, cane sugar and salt to a large mixing bowl and on low speed combine for about 5 seconds.
  2. Add butter, 1 piece at a time and continue mixing until a dough forms and pulls away from the sides of the bowl, about 2-3 minutes.
  3. Measure and set aside ⅓ cup of the dough, which will be used in the crumble.
  4. Using your hands, press the remaining dough into an even layer in the prepared baking pan.
  5. Bake 14-16 minutes or until edges begin to brown, rotating pan halfway though baking.
Blueberry Lemon Filling
  1. While the base bakes, combine preserves, blueberries* and lemon juice in a small bowl and mash with a fork until well combined but some berry pieces remain. (*If you want bigger blueberry pieces as I did, instead of mashing the blueberries with a fork, use your fingers to gently squeeze the blueberries before mixing with the preserves and lemon juice)
Crumble Topping
  1. While the base bakes, add the reserved dough, brown sugar, pecans and oats into the mixing bowl used for the base. Using a mixer, pastry cutter or your hands, mix until combined and "crumbly". Set aside.
Assemble
  1. Pour Blueberry filling over the hot cookie base and spread evenly. Sprinkle with crumble topping pinching crumble with fingers to create tiny crumble "clumps". Do not press crumble into the filling.
  2. Bake 22-25 minutes or until filling bubbling and crumble topping golden brown.
  3. Let bars cool completely in the pan.
  4. When cooled completely, lift the the parchment paper out of the baking pan and onto a cutting board. Cut into square and enjoy!
  5. Store in the refrigerator for several days

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11 thoughts on “Blueberry Crumble Bars

    1. I used Blueberry preserves because I like the texture mixed with the blueberries. You could use any jam/ jelly but perhaps add extra blueberries. As for a mix of sugar and real blueberries, I haven’t made it that way and don’t have my own jam recipe on the website yet but you could google blueberry chia jam and there are a variety of good ones using sugar or maple syrup, blueberries, some lemon plus chia seeds as a thickener. Hope that helps!

  1. Just made these! SUPER easy and delicious! Instead of GF Jules Flour, I used Bobs Red Mill 1-1 GF Baking Flour (the one in the blue bag), and it worked perfectly!

  2. Just made these today! So delicious and so easy!!! My only issue was the cookie base never really became dough with the mixer. After about five minutes I just squished it by hand until a dough formed ๐Ÿ™‚ I didnโ€™t mind that. I canโ€™t wait to make these again!!

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