How to Make It
Preheat your oven to 350°F (175°C) and grease a baking pan.
In a bowl, combine the oats, flour, brown sugar, and salt.
Pour in the melted butter and vanilla, mixing until crumbly.
Press half of this mixture into the bottom of the pan to form the crust.
Add the mixed berries evenly over the crust.
Sprinkle the remaining crumble mixture on top of the berries.
Bake for 25-30 minutes, until golden brown.
Serve
Let cool slightly, then slice into bars. Enjoy warm, with a scoop of ice cream or a dollop of whipped cream.
