J-Lyn's Awesome Salmon Casserole

Details

Ingredients

• 1 tablespoon butter, or as needed
• 1 cup elbow macaroni
• 1 (6 ounce) can salmon, drained
• 1 (10.75 ounce) can condensed cream of mushroom soup
• ⅔ cup milk, or to taste
• ½ cup grated Parmesan cheese
• 1 teaspoon salt
• 1 teaspoon ground black pepper
• ¼ cup French-fried onions