Ingredients

• 1 English breakfast muffin, cut in half
• 1 tbsp tomato puree
• 1 tsp red pesto
• 1 tbsp olive oil
• 2 to 3 button mushrooms, sliced
• 1/2 small red onion, sliced
• 1/2 small courgette, thinly sliced
• salt & freshly ground black pepper
• 50 g grated mozzarella or Cheddar Cheese
• 1 slice ham or salami cut into pieces (optional for non-vegetarians)