Stuffed Mushrooms

Serves 4   1 tsp olive oil 1 clove garlic, crushed 1 small onion, very finely chopped 75g/3oz fresh breadcrumbs 2 pineapple rings, chopped 250g/8oz cottage cheese Salt and pepper Grated nutmeg 8 large flat mushrooms, stalks removed     Preheat the oven...