Parmesan-Infused Garlic Mushroom Fettuccine

Ingredients

• 1 tablespoon olive oil
• 1 and 1/2 cups Parmesan cheese, grated
• 1/2 teaspoon black pepper, freshly ground
• 3 green onions, chopped
• 16 oz fettuccine pasta
• 6 large garlic cloves, minced
• 3 tablespoons unsalted butter
• 1/2 teaspoon salt
• 1/2 teaspoon chili flakes
• 16 oz mushrooms, sliced