• Preheat oven to 350°F. Line an 8 or 9 inch square pan with a parchment paper sling then generously grease with cooking spray or butter.

Crust & Topping

• In a medium bowl, stir together flour, oats, brown sugar, cinnamon, baking soda, and salt. Pour melted butter, vanilla, and almond extract over top and mix until dough clumps together to form a crumble.
• Pour about 2 cups of the crumble into the prepared pan, and set aside the remaining 1 cup to use as the topping later.
• Using your hands, press the crumble evenly into the pan to form the crust.

Blueberry Filling

• In a medium saucepan, combine all ingredients for the filling and cook over medium heat. Using a wooden spoon, press down on some of the blueberries as they cook to break them down.
• Bring mixture to a boil, then turn down the heat and cook for 3-5 minutes or until filling has thickened slightly. It should coat the back of your spoon. Remove from heat and pour onto prepared crust, spreading evenly.
• Sprinkle the remaining cup of crumble mixture over the top of the filling. Bake for 30-35 minutes or until filling is bubbling and topping is golden.
• Let pan cool completely on a wire rack, then transfer to the fridge. Chilled bars are easier to cut. Remove the bars from the pan by lifting the parchment sling out. Place them on a cutting board and cut into squares.