Step 1

Preheat the oven to 350F. Grease an 8-inch square baking dish.

Step 2

In a large mixing bowl, whisk together 1 cup of sugar, and the flour stir in the whole milk and vanilla. Add the butter and stir until well combined. Spread the batter into the bottom of the greased baking dish.

Step 3

In a medium mixing bowl, toss the blackberries with the remaining ½ cup of sugar. Scatter the sugared berries over the top of the batter.

Step 4

Bake for 1 hour or until golden brown and bubbling. Let cool for at least 10 minutes before serving. Best served warm with whipped cream or vanilla ice cream.