How to Make It
Preheat your oven to 350°F (175°C).
In a bowl, combine the mixed berries, sugar, and lemon juice.
Mix well and set aside.
In another bowl, combine the oats, flour, brown sugar, cinnamon, and salt.
Stir in the melted butter until crumbly.
Pour the berry mixture into a greased muffin tin.
Spoon the crumble topping generously over the berries.
Bake for 25–30 minutes until the topping is golden and the berries are bubbling.
