Garlic mushroom toast

Ingredients

• 8 slices brown sourdough loaf
• olive oil for brushing
• 1 clove garlic, peeled, left whole
• 1/2 cup gruyere cheese, grated
• 1/4 cup olive oil
• 500g large brown field mushrooms, sliced
• 2 cloves garlic, crushed
• 1 red onion
• 1/4 tsp freshly grated nutmeg, optional
• 1/2 cup flat leaf parsley, roughly chopped
• To servetoasted walnuts or pine nuts, extra flat leaf parsley