01 -
Preheat the oven to 175°C.
02 -
Grease a large glass or ceramic baking dish, approximately 28 cm in diameter.
03 -
In the prepared dish, combine the blueberries, vanilla extract, oat flour, and lemon juice. Gently mix to evenly coat the fruit.
04 -
In a medium bowl, mix oats, oat flour, cinnamon, honey, melted butter, and salt. Incorporate coconut, hemp seeds, and walnuts if desired, mixing until the topping is cohesive and slightly clumpable.
05 -
Distribute the topping mixture evenly over the berry layer and gently pat down. Bake for approximately 40 minutes, or until the topping turns golden brown.