4 cups mixed berries (I used fresh blueberries, fresh raspberries, fresh blackberries and frozen wild blueberries)
1/4 cup sugar (or more if berries are not sweet)
2 tablespoons cornstarch
1/2 cup flour
1/4 cup brown sugar
1/4 cup butter, cut into small pieces
Preheat oven to 350º.
Gently mix berries with sugar and cornstarch. Divide between 4 8-ounce ramekins.
Make topping by combining flour, brown sugar and butter. With fingers, press, break apart and work in butter until topping resembles cornmeal. Sprinkle evenly over the four ramekins.
Place ramekins on baking sheet and bake for 30-40 minutes, till filling bubbles and topping is browned. Cool slightly, then serve with vanilla ice cream.