This is a great and easy recipe. It's usually made in a dutch oven, but it can also be made in the oven and turns out great!
1 pkg. (12-16 oz.) frozen blackberries
1 pkg. (12-16 oz.) frozen raspberries
1 pkg. yellow cake mix
1 can (12 oz.) sprite
Preheat oven t 375 degrees. Mix berries and pour in bottom of 9 x 13 pan. Mix dry cake mix and sprite and spread evenly over berries. Cover with tin foil. Bake for 30 minutes. Remove foil and bake for 10 - 15 more minutes, or until lightly browned. Remove from oven and cool for 15 minutes. Serve warm with a scoop of vanilla ice cream.