Total Time
Prep 15 mins
Cook 45 mins

This was a family favorite after a big Sunday dinner. What is great is that this casserole can be modified depending on the amount of leftovers you have.


  1. Dice roast beef into cubes.
  2. Mix with gravy and Worcestershire sauce.
  3. Add mushrooms.
  4. Place in bottom of casserole.
  5. Mix half cup cheese into leftover potatoes.
  6. Place potatoes on top of casserole and sprinkle remaining cheese over casserole.
  7. Bake at 350 for 45 minutes.
Most Helpful

Tasty recipe. I increased the beef/gravy abit and added some frozen vegys. We like the flavour of Worcestershire sauce so I increased it too. This is a great way to use up the roast beef dinner leftovers. Easy to make & we enjoyed it, thanks for sharing.

Mustang Sally 54269 August 08, 2013

What a wonderful dish to use up those leftovers! So easy and so tasty too. The only thing I changed was to use a teaspoon of dried chopped onions since I wasn't sure raw onion would get done in the time listed. I have just enough left for my lunch tomorrow and I'll be making the others jealous. Served with a green veggie and crusty bread, we were happy campers. Thanks for sharing this winner!

DuChick November 22, 2009

I actually made this last night making it a true Monday Night Special! Fast and easy. A great way to use up leftovers without having to add a bunch of extra ingredients. I made it in a 9x9 glass baking dish and it was quite full so I made sure the mashed potatoes were sealed well around the edges. Thanks for sharing. *Made for Fall Pac 2008*

Brenda. September 30, 2008