Spinach, mushroom and mozzarella risoni bake

Ingredients

• salt
• 350 gram risoni (rice-shaped pasta)
• 25 gram butter
• 1 tablespoon olive oil
• 200 gram swiss brown mushrooms, sliced
• 4 clove garlic, minced
• 1 2/3 cup tomato passata
• 2 teaspoon raw caster sugar
• 160 gram baby spinach leaves
• 1/2 bunch basil leaves, torn
• 110 gram buffalo mozzarella, torn
• sea salt and cracked black pepper
• 1/4 cup finely grated parmesan, to serve