Amy, I froze a whole cake stuffed and topped with fresh raspberries; as the cake thawed, the berries did weep a bit, though the ones on top were worse than the ones inside. You could try the frozen raspberries; I suspect they'd make your filling juicy, and you'd have to decide ahead of time what your capacity for potentially watery filling is. Personally, I think you might do better stirring the berries with a bit of sugar on the stovetop to make a quick jam, which would ensure your cake won't be dribbling liquid down its sides. Good luck - PJH@KAF

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