J-Lyn's Awesome Salmon Casserole

Ingredients (9)

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