thaw first. For a spicier version, use a spicy Italian dressing and add crushed red pepper flakes or a pinch of cayenne. If you prefer a crispier top, broil the finished dish for 1 to 2 minutes, watching closely so the cheese doesn’t burn.
Food safety tips: Always check that any add-ins like meat are fully cooked before mixing into the casserole; this recipe doesn’t bake long enough to safely cook raw meat. Keep leftover macaroni refrigerated in a shallow container and eat within 3 to 4 days, reheating until steaming hot before serving. Because this dish uses a vinegar- and oil-based dressing, don’t leave it out at room temperature for more than 2 hours (or 1 hour if your kitchen is very warm) to avoid bacterial growth.