Preheat your oven to 400° F.
In a small bowl whisk together the sugar and cornstarch.
Add the berries to a large bowl. Sprinkle with the sugar/cornstarch mixture and gently toss together until everything is combined.
Add the vanilla and mix.
Assembly:
Using a small amount of butter grease a baking dish.
Add the fruit mixture and spread out in an even layer.
Remove the dough from the refrigerator.
Using a 2” round cutter or a 2” star cookie cutter cut out 12 biscuits. Dip the cutter in flour before each cut and press straight down into the dough.
Place the biscuits on top of the fruit.
Brush the tops of the biscuits with the egg and sprinkle with sugar.
Bake at 400° for 15 Minutes – Reduce the oven temperature to 375° and bake for an additional 30 minutes. The biscuits should be golden brown and the filling should be bubbling.
Remove from the oven and let rest for at least 30 minutes to give the juices a chance to thicken.
Spoon onto individual plates and top with whipped cream or ice.