When I froze the berries, I added a little sugar to them so they would be ready for cobbler or crisp when I needed them. I also froze them in quarts, because for either a crisp or cobbler, you would need at least a quart of berries. I thawed them out and added them to a 9x9 baking dish. I didn't need to add anything to them, just sprinkle with a little flour to thicken the juices as it cooked.
The cobbler topping is very similar to a biscuit recipe, but sweeter.
Mix 1 Cup Flour
2 TBSP Sugar
1 1/2 tsp baking powder
1/4 tsp salt
Then chunk in the cold butter
mix till it looks like course crumbs
beat 1 egg with 1/4 C milk
mix with flour mixture and spoon on top of the berries
I sprinkle dough with a little extra sugar, then Bake at 400 degrees for 20-25 minutes, or until underneath of topping isn't doughy anymore.