Blueberry pie bars - cinnamon cookie base, blueberry pie filling in the centre and brown sugar oat crumble on top. They’re blueberry pie, blueberry bars, blueberry crumble all in one! And they are delicious.
In a medium bowl, stir all crumble ingredients until combined. Set aside.
Preheat oven to 350F. Line an 8x8 pan with parchment paper with a slight overhang on each side. Set aside.
In a large bowl, whisk 1 3/4 cup flour, 1/2 tsp baking powder, 1/2 teaspoon cinnamon and 1/2 tsp salt until combined. Set aside.
Using a handheld electric mixer or a stand mixer fitted with the paddle attachment, cream butter on medium high speed until creamy (about 1 minute). Add sugar and continue beating until light and fluffy (another 2-3 minutes). Scrape the bottom and sides of your bowl.
Add 2 eggs and 1 tsp vanilla and stir until incorporated.
Switch to low speed and add your flour mixture. Stir until just combined. Your batter will be thick and sticky.
Take 3/4 of your batter and spread evenly on the bottom of your prepared pan. Press firmly down with your hands (or a spoon or the back of a measuring cup) to make sure it's packed.
Pour your blueberry filling on top of the batter and spread evenly. Then take your remaining batter and distribute over the filling. It won't cover all of the blueberry and that's OK.
Sprinkle brown sugar oat crumble on top and bake for 50-60 minutes or until golden brown. Cool in pan before removing and cutting into squares.