Saw this on a friend's Facebook page today...had to come home and try it out...
Start with a bunch of frozen berries in a 9x13 pan
Cover with a (dry) white cake mix
Carefully pour a can of lemon lime, sprite etc on top.
Bake for 45 minutes at 350F
and it's almost gone...
Except for a few powdery spots where the cake mix didn't dissolve, it turned out great !!