Lemon Blueberry Crumble Bars

These Lemon Blueberry Crumble Bars are gluten-free and made with whole and healthy ingredients. You can’t beat the refreshing punch of lemon zest and the sweetness of the blueberries. These blueberry bars are the perfect blueberry dessert recipe to eat all summer!

Crumble Bars

Can we please talk ALL THINGS Lemon Blueberry Crumble Bars? These delicious dessert bars are seriously one of my favorite things to make in the whole wide world. There’s just something about blueberries and lemons together that make me all giddy inside. This is such a great dessert bar base recipe to use to deviate with different fruit flavors. I’m thinking cherry, strawberry, raspberry, etc. The list goes on!

Crumble Bar recipes may look intimidating to make, but it’s actually quite easy. Think of it as a two part recipe. You’ve got your delicious crust and crumble and then the fruit filling. Let’s talk crust, first.

Sugar Cookie Crust

If the crust was a stand-alone recipe, I wouldn’t be mad at all. It’s buttery and perfectly sweet just like every pie bar should be. It’s made with an almond meal/oat crust and sweetened with honey. Here’s what else you need:

  • Almond meal
  • Rolled oats
  • Milk
  • Coconut oil
  • Honey/Maple syrup
  • Vanilla extract

Crust tip: If you’re hoping to keep the crust 100% gluten-free, make sure that you use certified gluten-free oats. And, if you’re wanting to keep this recipe vegan, you can sub maple syrup in for the honey!

Blueberry Filling

The blueberry filling is where this blueberry dessert recipe gets tasty. Start off by heating blueberries, water, lemon, honey, and tapioca over medium heat and let the magic happen. The mixture becomes thick and gooey, the perfect consistency for blueberry crumble bars. If you’ve never heard of tapioca flour, it’s very similar to cornstarch in that it’s a thickener. This is an essential ingredient to getting that thick consistency you crave when it comes to a dessert bar. Here’s what you need:

  • Blueberries
  • Water
  • Lemon juice
  • Lemon zest
  • Honey (option to sub maple syrup for vegan option)
  • Tapioca flour

Filling tip: try swapping the blueberries out for a different berry or fruit for a yummy, creation of your own!

Holding crumble bar dessert bars

Blueberry Bars Storage

We recommend storing your crumble bars in an airtight container in the fridge. These will last you anywhere from 3-5 days if you don’t eat them first!

More Blueberry Desserts

Lemon Blueberry Crumble Bars Video


Lemon Blueberry Crumble Bars

These Lemon Blueberry Crumble Bars are gluten-free and made with whole and healthy ingredients. You can’t beat the refreshing punch of lemon zest and the sweetness of the blueberries. It’s the perfect healthy dessert bar recipe for all summer long!

  • Prep Time: 10 minutes
  • Cook Time: 40 minutes
  • Total Time: 50 minutes
Author: Lee Hersh
Yield: 9 bars 1x
Category: Dessert
Method: Oven
Cuisine: American


For the Crust and Crumble

  • 3 cups almond meal, superfine⠀⠀
  • 1 cup rolled oats⠀⠀
  • 2 tablespoons milk, any kind⠀⠀
  • 1/4 cup coconut oil, room temp⠀⠀
  • 1/4 cup honey (or maple syrup) ⠀⠀
  • 1 teaspoon vanilla extract⠀⠀
  • 1/8 teaspoon salt⠀⠀

For the Berry Filling

  • 3 cups fresh blueberries⠀⠀
  • 1/2 cup water⠀⠀
  • 1/4 cup lemon juice⠀⠀
  • zest from one lemon ⠀⠀
  • 1/4 cup honey (or maple syrup)⠀⠀
  • 2 tablespoons tapioca flour⠀⠀
  • pinch of salt⠀⠀


  1. First, preheat oven to 350ºF and spray an 8×8-inch pan with coconut oil cooking spray and set aside.
  2. Next, mix all crust/crumble ingredients together in a medium/large mixing bowl.
  3. Then, take 2/3 of the mixture and press it evenly onto the bottom of the oiled 8×8 pan. Set the rest of the crust/crumble mixture aside (this is what you will use for the crumble topping).
  4. Bake crust at 350ºF for 10 minutes. Remove crust and set aside.
  5. Next, place all ingredients for the berry filling into a medium sauce pan. Turn heat to high and bring filling to a boil, stirring often and breaking up the blueberries. Once boiling, turn heat down to low and let simmer for 10-15 minutes. Continue stirring.
  6. Once the berry filling has thickened, pour on top of the crust. Spread the rest of the crumble mixture over the top of the berry filling and then bake for another 10 minutes at 350ºF.
  7. Let cool for 20 minutes before placing into the fridge for at least 2 hours to let the filling set. Slice and enjoy!


  • Serving Size: 1/9
  • Calories: 396
  • Sugar: 22
  • Sodium: 68
  • Fat: 26
  • Carbohydrates: 39
  • Fiber: 7
  • Protein: 10

Other Dessert Bar Recipes

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