Simple Leftover Roast Beef Casserole

Leftover Roast Beef
Leftover Roast Beef. Diana Rattray
  • 45 mins
  • Prep: 15 mins,
  • Cook: 30 mins
  • Yield: 4 Servings
Ratings (9)

This leftover roast beef casserole is a great way to enjoy leftover roast beef. It's simply a mixture of cooked roast beef, gravy, and vegetables topped with cheese,

Even if you don't have leftover roast beef, you can make this easy dish. Use thick-sliced deli roast beef or use diced raw meat. Stir-fry the raw beef before combining it with the gravy. See the tips and variations for more ideas.

It's a great spur-of-the-moment dish to fix and serve with boiled or mashed potatoes. It's excellent over rice or noodles as well.

What You'll Need

  • 2 cups diced leftover roast beef
  • 1 can beef gravy or 1 cup of brown gravy or mushroom gravy made from dry mix
  • 1 jar (about 16 ounces) small white onions, drained
  • 1 package (10 ounces) frozen peas and carrots, cooked
  • 1/2 cup shredded sharp cheddar cheese

How to Make It

Combine the beef with gravy, onions, peas and carrots.

Transfer to a buttered 1 1/2 to 2-quart casserole and top with shredded Cheddar cheese. Bake at 350 F for 35 minutes.

Serves 4.


  • Replace the leftover roast beef with leftover roast pork. Use packaged pork gravy made from a dry mix.
  • Use coarsely ground beef, browned in the skillet before combining with the gravy.
  • Make the casserole with leftover pork loin and purchased pork gravy.
  • Dice a few thick slices of deli roast beef to use instead of leftover roast beef.
  • If you have leftover mashed potatoes, warm them and spread them over the beef and vegetable mixture before adding the cheese. Top with the cheese and bake as directed, or until the potatoes are lightly browned.

Expert Tips

  • There are many ways to use leftover roast beef. Make a cottage pie with leftover roast beef, use it in sandwiches, make open-faced sandwiches with purchased or leftover gravy, or heat it in your favorite stroganoff sauce.

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