Easy Tuna Pasta Bake Recipe

Ingredients

• 1 (14.6 ounce) package penne pasta
• 1 tablespoon olive oil
• 1 tablespoon butter
• 1 onion, chopped
• 3 (5 ounce) cans tuna, drained and flaked
• 1 cup heavy whipping cream
• 0.5 teaspoon ground nutmeg
• salt and ground black pepper to taste
• 1.25 cups grated Parmesan cheese