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Deli Roast Beef Sandwiches with Mashed Potatoes

Just like Mom or Grandma used to make—but so much quicker! Store-bought mashed potatoes and gravy and deli roast beef help you turn out this heartwarming combination before you can say, “Order up!” —Ruth Ann Bott, Lake Wales, Florida
  • Total Time
    Prep/Total Time: 10 min.
  • Makes
    4 servings


  • 1 pound sliced deli roast beef
  • 2 cans (10-1/4 ounces each) beef gravy
  • 1 can (4 ounces) mushroom stems and pieces, drained
  • 1 package (3-3/4 ounces) creamy butter instant mashed potatoes
  • 4 slices Italian bread (1/2 inch thick)


  • In a 2-qt. microwave-safe bowl, combine the beef, gravy and mushrooms. Cover and microwave on high for 2-3 minutes or until heated through.
  • Meanwhile, prepare potatoes according to package directions. Divide bread among four plates. Spoon beef mixture over bread. Serve with potatoes.
Editor's Note
This recipe was tested in a 1,100-watt microwave.
Nutrition Facts
3/4 cup meat mixture with 1/2 cup potatoes and 1 slice bread: 347 calories, 7g fat (1g saturated fat), 75mg cholesterol, 2051mg sodium, 38g carbohydrate (1g sugars, 3g fiber), 30g protein.

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  • makeda
    Aug 30, 2020

    One of my fav easy meals to make, use smoked turkey for a similar meal. I change up the potatoes and the veg used!

  • OwlTree
    Oct 29, 2019

    Before I retired this was a fast, filling, go-to meal. I left out the mushrooms because my late husband did not like them. While I prefer home-made mashed potatoes, the instant potatoes listed in the recipe are really good and we liked garlic roasted instant potatoes, too. Oh....and I lightly toasted the bread, but good either way.

  • K.
    Jul 18, 2019

    No comment left

  • Dave
    Mar 28, 2019

    Mom and grandma would never have used instant mashed potatoes. Something worth doing is worth doing well. It only takes a few minutes to peel a few potatoes and put them on to boil. Four stars with instant mashed potatoes, five stars with real mashed potatoes.

  • Anne
    Nov 2, 2018

    Use Bob Evans mashed potatoes in the refrigerated section of the grocery. Quick and delicious

  • gunslinger
    Sep 19, 2016

    Comfort food taste, so quick and easy to prepare!

  • valanddansmith
    Aug 30, 2012

    My family enjoyed this meal... There is just something about gravy that everyone seems to love:)