Ingredients
Method
Prepare the filling
- Preheat oven to 375°F (190°C). Mix blueberries, sugar, cornstarch, lemon juice, zest, vanilla, and salt. Transfer to baking dish.
Make the crumble topping
- Combine oats, flour, sugar, cinnamon, and salt. Rub in cold butter until crumbly.
Assemble and bake
- Sprinkle topping over filling and bake for 40–45 minutes until golden and bubbling.
Cool and serve
- Let rest for 15 minutes before serving. Enjoy warm.
