Jamur Isi Pizza

Bahan-bahan (5 porsi)

• 5 large mushrooms (, 10cm/4" wide (portobello, flat mushrooms etc, Note 1))
• 2 tbsp olive oil
• Salt and pepper
• 2/3 cup pizza sauce ((I use store bought))
• 100 g / 3.5 oz salami slices (, chopped)
• 1/4 red onion (, finely chopped)
• 1/3 cup black olive slices
• 1 cup (100g) mozzarella cheese (, shredded )