01 -
Heat your oven to 375°F (190°C). Line an 8-inch pan with parchment paper, leaving extra on the sides so you can easily lift everything out later.
02 -
Mix up the oats, flour, cinnamon, baking soda, brown sugar, and salt in a bowl. Stir in the melted butter and vanilla. You'll end up with a crumbly texture.
03 -
Press half the crumbly mix firmly into the bottom of your lined baking pan, making sure it's nice and even.
04 -
Combine the blueberries, cornstarch, and sugar in a small bowl. Stir them gently until the berries are fully coated.
05 -
Sprinkle what’s left of the crumbly mixture on top of the blueberries. Gently press it down to hold everything together.
06 -
Pop the pan in the oven for 35-40 minutes. You'll know it's done when the top is golden brown and the blueberries are bubbling. Let everything cool completely before pulling it out with the parchment and cutting into squares.