3 Ingredient Blackberry Cobbler

3 Ingredient Blackberry Cobbler Frozen Blackberries (I used Great Value 16 oz. size from Wal-Mart) 1 Yellow Cake Mix (in the box) 8 oz. can of 7-up (any clear soda will work) Spray your 9X13 dish with non stick spray. Dump in your berries (any type you choose). Empty the dry cake mix atop the berries. Pour your 7-up over the top of the cake mix. (Do not mix) Bake at 350 for 35-40 minutes. All ovens vary in temperature, so use a toothpick and start checking at the 30 minute mark. Serve with vanilla ice cream