Blueberry Crumble Bars

An easy, gluten-free and vegan treat, perfect all Summer long! A shortbread cookie base + Blueberry Lemon filling + Crumble... Each layer is delicious by itself, together it is magical!

Blueberry Crumble Bars gluten free #glutenfreerecipes
Blueberry Crumble Bars

An easy recipe for the yummiest Gluten-free Blueberry Bars!

This post may contain affiliate links. Please read our Disclaimer.

For the Raspberry Crumble Bars, click here. (The filling uses slightly less lemon juice than the blueberry version)

For Blueberry Crumble Bars, read on!

New! I added a cooking video to this page so you can see how easy it is to make these Blueberry Crumble Bars!

If you’re new to this website, at the bottom of every recipe page is a printable recipe with exact measurements and directions.

Hope you love them!

Blueberry Crumble Bars gluten free #glutenfreerecipes

May 2020: Today was a sneak peak at Summer!

It was warm and sunny and gorgeous! So naturally, we are grilling tonight (and making a batch of White Bean Burgers!) and decided it was time to make this favorite dessert from last Summer.

These bars are based on our favorite Raspberry Crumble Bars but made with a touch more lemon juice to balance the sweetness of the juicy blueberries.

And they are sooooo yummy!

Hope you love them as much as we do!

Original post…

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!

Blueberry Crumble Bars gluten free #glutenfreerecipes

It is shortbread 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
  • 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 crumble topping is the perfect finish!

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


Blueberry Crumble Bars gluten free #glutenfreerecipes

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


dairy free butter (or regular butter)

brown sugar


gluten-free old fashioned rolled oats

blueberry preserves

fresh blueberries

and fresh lemon juice.

Blueberry Crumble Bars gluten free #glutenfreerecipes

As an aside, you may have noticed that we are affiliate for GFJules.  To learn more about why we love GFJules flour and why we have used it for 10 years, click here.

Bonus: at the bottom of that post is a one-time use affiliate Discount Code.

And importantly, purchasing through an affiliate link does not change your cost at all. It generates a small percentage of the sale for me, and purchasing through an affiliate link helps me fund this website and all the recipes I share, so thank you!

Back to the gluten-free Blueberry Crumble Bars….

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.  Mix well (about 1-2 minutes) and a dough will form.

Blueberry Crumble Bars gluten free #glutenfreerecipes

Then press into your baking pan and bake for 14-16 minutes.

Blueberry Crumble Bars gluten free #glutenfreerecipes

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

Blueberry Crumble Bars gluten free #glutenfreerecipes

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

Blueberry Crumble Bars gluten free #glutenfreerecipes

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!

Let them cool in the baking pan so they continue to set, then lift the parchment paper right out of the pan, slice and enjoy!

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 gluten free #glutenfreerecipes

Recipe adapted from America’s Test Kitchen.

PIN it!

Blueberry Crumble Bars gluten free #glutenfreerecipes

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



Blueberry Crumble Bars gluten free #glutenfreerecipes
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4.64 from 11 votes

Blueberry Crumble Bars

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!
Prep Time15 minutes
Cook Time40 minutes
Total Time55 minutes
Course: Dessert, Cookies and Bars
Cuisine: Gluten-Free, Egg-Free, Nut-Free optional, Vegan, Dairy-Free and Egg Free Optional
Keyword: gluten-free summer dessert, gluten-free blueberry dessert, easy gluten-free dessert, blueberry crumble bars, gluten-free blueberry crumble bars, gluten-free vegan dessert
Servings: 16 bars
Author: Healthy Gluten-free Family


Cookie base (you will reserve 1/3 cup of the base dough for the topping)

  • 1 1/2 cups gluten-free flour with xanthan gum (we used GF Jules, affiliate link)
  • 1/3 cup cane sugar
  • 1/4 teaspoon salt
  • 8 tablespoons butter or dairy free butter, room temperature For a more buttery flavor, use 9 tablespoons of butter


  • 2 tablespoons packed brown sugar
  • 1/3 cup pecans, finely chopped for an pecan allergy, try walnut or substitute extra oats
  • 1/4 cup gluten free old fashioned rolled oats
  • *plus 1/3 reserved cup of the cookie base dough

Blueberry filling

  • 3/4 cup blueberry preserves
  • 3/4 cup fresh blueberries
  • 3 teaspoons fresh lemon juice


  • Preheat oven to 375 degrees F
  • 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

  • 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.
  • 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.
  • Measure and set aside 1/3 cup of the dough, which will be used in the crumble.
  • Using your hands, press the remaining dough into an even layer in the prepared baking pan.
  • Bake 14-16 minutes or until edges begin to brown, rotating pan halfway though baking.

Blueberry Lemon Filling

  • 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

  • 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.


  • 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.
  • Bake 22-25 minutes or until filling bubbling and crumble topping golden brown.
  • Let bars cool completely in the pan.
  • When cooled completely, lift the the parchment paper out of the baking pan and onto a cutting board. Cut into square and enjoy!
  • Store in the refrigerator for several days.
Tried this recipe?Mention @healthyGFfamily or tag #healthyGFfamily!


31 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. 5 stars
    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 🙂 I didn’t mind that. I can’t wait to make these again!!

  3. These were super delicious and easy! I had to make a second batch the next day because we didn’t have any leftovers from the party.
    I love all your recipes so much, especially your desserts. Thanks a million.

  4. 5 stars
    Thank you for such a great recipe! I made this for the 4th of July. I went to the store at the last minute, but couldn’t find GF oats. As a substitute, I used Purely Elizabeth’s granola. It turned out great and everyone loved it.

  5. 5 stars
    Just found this recipe – and it was incredible. I used my own substitutions for the flour blend (King Arthur) and the auger (Swerve). I also added 2 T of Swerve to the blueberry filling. I absolutely LOVE the shortbread recipe – and I’ve tried A LOT of them ☺️ Thank you for an amazing intro into your published world of deserts!

  6. 5 stars
    Wow! These are so delicious! You can hardly tell there gluten free! This recipe is one of my favorites! Thank you!

4.64 from 11 votes (3 ratings without comment)

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