Pizza Mini Roti Bawang Putih (Loyang Muffin)

Bahan-bahan (12 porsi)

• 12 slices white sandwich bread (, fresh (Note 1))
• 2 tbsp butter
• 2 g arlic cloves (, crushed)
• 1/8 tsp salt
• 1/2 cup pizza sauce ((Note 2))
• 1/4 cup red onion (, finely diced)
• 1/3 cup mushroom (, finely chopped)
• 3/4 cup grated cheese (, melting (I used a mix of mozzarella and tasty, equal amounts))
• 1/4 cup sliced small pepperoni ((Note 3))