This easy Blueberry Crumble Bars recipe features two layers of buttery, crispy baked oats sandwiching a juicy, jammy blueberry center that's bright with fresh lemon. Perfect for grab & go breakfasts, snacking, or a simple summer dessert!
Ingredients
For the Crumble Crust & Topping
2cupsall-purpose flour
2cupsold fashioned oats
½cupbrown sugar
½teaspoonbaking powder
¼teaspooncinnamon
1cupunsalted butter, melted
¼cuppure maple syrup
For the Blueberry Layer
3cupsfresh blueberries
¼cupgranulated sugar
2tablespoonscornstarch
2tablespoonsfreshly squeezed lemon juice
1teaspoonlemon zest
Instructions
For the Crumble Crust & Topping
Preheat oven to 350℉. Line a 9"x13” pan with parchment paper or spray it generously with nonstick cooking spray.
In a medium bowl, stir together flour, oats, brown sugar, baking powder, and cinnamon. Add melted butter and maple syrup, and stir until clumps of dough begin to form.
Press two thirds of the crumble mixture into the bottom of the pan and smooth it into an even layer. Set remaining crumble mixture aside. Bake crust for 10 minutes while you prepare the blueberry layer.
For the Blueberry Layer
In a medium blow, stir blueberries, sugar, cornstarch, lemon juice, and lemon zest until evenly combined.
Spread blueberry mixture evenly over the par-baked crumble crust.
Sprinkle the remaining crumble mixture over the top of the blueberries. Bake for 60-65 minutes, or until the crumble is golden brown and crisp.
Allow bars to cool completely in the pan. Then remove them from the pan using the parchment paper and cut into your desired size. You can also pop the bars in the fridge for an hour to make slicing even easier if needed.
Notes
Enjoy right away. Store any leftovers in an airtight container in the fridge for up to four days, or in an freezer-safe, airtight container for up to 3 months.
Nutrition information is automatically calculated by Spoonacular. I am not a nutritionist and cannot guarantee accuracy. If your health depends on nutrition information, please calculate again with your own favorite calculator.