Spray a 6-quart slow cooker with non-stick spray, set aside.
In a medium-sized bowl stir together the peaches in heavy syrup, cranberry sauce and 2 tablespoons brown sugar. Pour this peach/cranberry mixture into the slow cooker.
In a another medium-sized bowl mix together the 1 3/4 cups Krusteaz Gluten Free Buttermilk pancake mix, 1 cup milk, egg, 1/3 cup melted butter and 2 tablespoons sugar until smooth. Spread this cobbler topping mixture evenly over the peach/cranberry mixture
In a small bowl mix together the 2 tablespoons sugar and 1/4 teaspoon cinnamon. Sprinkle this cinnamon sugar mixture over the cobbler evenly.
Cover and cook on HIGH for 2 hours and 15 minutes. DO NOT open the lid during the cooking time, or the cobbler may not set.