It was round breaded meat (no idea what meat it was) and inside it was filled with baked beans like a weird kind of chicken Kiev.
This was a regular dish at my school in South London in the early 90s. Never seen it anywhere else. Occasionally, we would also have smaller versions filled with ketchup. Although, I think they may have been sold in supermarkets.
Was anyone else served this at school? Or have any other tales of weird school dinners?