How to Make It
Preheat your oven to 350°F (175°C).
In a bowl, mix flour, sugar, baking powder, and salt.
Stir in milk, melted butter, and vanilla until combined.
Pour the batter into a greased baking dish.
Spread the berries evenly over the batter.
In a separate bowl, mix brown sugar with boiling water and carefully pour over the top.
Bake for 30-35 minutes until the top is golden and the center is bubbling.