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Blueberry Lemon Bars

  • Author: Maryea
  • Total Time: 50 minutes
  • Yield: 8-10 servings 1x


These blueberry lemon bars are a big hit in our house.  The sweet blueberry taste with a hint of lemon to balance It out makes these bars a great treat all spring and summer long. 



For the crust

  • ¾ cup oat flour (or rolled oats in a food processor for 12 minutes)
  • ¾ cup old fashioned rolled oats 
  • 4 Tablespoons of maple syrup
  • ¼ Cup apple sauce
  • 2 Tablespoons of lemon zest
  • 1 Teaspoon baking powder
  • ¼ Teaspoon salt

Blueberry Filling

  • 2 Cups blueberries 
  • 4 Tablespoons lemon juice
  • 2 Tablespoons maples syrup
  • 1.5 Tablespoons gluten-free flour (I like a 1 :1 gluten free blend)
  • ¼ Teaspoon salt


  1. Pre-heat oven to 350 degrees Fahrenheit.
  2. In a medium/large mixing bowl add the oat flour, oats, baking powder, salt, and mix well.  
  3. Add the maple syrup, apple sauce, and lemon zest, and mix well. 
  4. Using an 8×8 baking dish lined with parchment paper, pour 3/4 ‘s of the oat crust mixture into the dish and press evenly until level.
  5. In a separate bowl add the blueberries, lemon juice, maple syrup, flour, and salt.  Using an immersion blender briefly blend (5-10 seconds) until ¾ of the blueberries are pureed leaving ¼ whole of large chunks.  If you don’t have an immersion blender use a regular blender and pulse for 2-4 times. 
  6. Pour blueberry mixture onto the oat crust and spread out evenly.
  7. Using your hands sprinkle the remaining ¼ of the oat crust onto the top of the blueberries.
  8. Bake in the oven on 350 degrees Fahrenheit for 35-40 minutes and let fully cool then slice and serve.  Enjoy!


Why let it cool so long before serving?

The top blueberry layer will thicken as it cools and therefore hold together better when cutting into bars.  You can even refrigerate if you want to hurry the process.  And they tend to taste even better the next day chilled in the fridge.


  • Prep Time: 10 minutes
  • Cook Time: 40 minutes


  • Serving Size: 1 bar
  • Calories: 111
  • Sugar: 11.1 grams
  • Fat: 0.9 grams
  • Saturated Fat: 0.2 grams
  • Carbohydrates: 23.9 grams
  • Fiber: 2.1 grams
  • Protein: 2.3 grams

Keywords: Blueberry Lemon Bars