Skip to main content New<> this month
Get the Allrecipes magazine

Leftover Prime Rib with Mushrooms and Mashed Potatoes

Rated as 4 out of 5 Stars

"Oh yum, was tired of the rich holiday scene with gravy, etc. This is a great way to use leftover prime rib and mashed potatoes, it's fast and more importantly, easy!"
Added to shopping list. Go to shopping list.


25 m servings 283
Original recipe yields 2 servings


{{model.addEditText}} Print
  1. Melt butter in large skillet over medium heat. Add water and minced garlic; stir for 1 minute. Add mushrooms, cover, and cook, stirring occasionally, until mushrooms are tender, about 5 minutes. Add prime rib and mashed potatoes and turn heat to low. Cook, stirring occasionally, until everything is heated through, 5 to 7 minutes. Season with salt and pepper.

Nutrition Facts

Per Serving: 283 calories; 8.2 31.7 21.5 43 619 Full nutrition

Explore more


Read all reviews 1
Most helpful
Most positive
Least positive

4.5, lovely, mushy, messy good tasting entrée alongside broccoli, cauliflower and carrots. (or whatever)