Reser's Deli Sides Broccoli Cheddar Au Gratin is a popular vegetable side dish featuring tender broccoli florets in a rich and creamy cheddar cheese sauce. Made with whole milk and cheddar cheese, this dish is fully prepared and ready to heat and serve with your favorite entree at dinner for a quick, convenient and quality family meal. Free of artificial flavors and colors. Microwaveable container. Ready In 4 minutes.