Pre-heat the oven to 200 �C / 400 �F / Gas 6.

Stretch the bacon so that it doesn't shrink when it's cooked. Use the back of a knife. Cut each rasher in half.

Wrap a piece of bacon round each oyster. Place on a baking sheet. Keep them packed up tight so that they don't unravel. Bake for about 8 minutes.

Butter the toast. Arrange 2 angels on each piece and garnish the dish with the watercress.