Leftover Prime Rib with Mushrooms and Mashed Potatoes


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!

Prep Time:
10 mins
Cook Time:
15 mins
Total Time:
25 mins
2 servings


  • 2 teaspoons butter

  • 2 teaspoons water

  • 2 tablespoons minced garlic

  • 2 cups sliced fresh mushrooms

  • 2 (1 inch) thick slices cooked leftover prime rib, cut into 1-inch cubes

  • 1 ½ cups leftover mashed potatoes, or more to taste

  • salt and ground black pepper to taste


  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
8g Fat
32g Carbs
22g Protein
Nutrition Facts
Servings Per Recipe 2
Calories 283
% Daily Value *
Total Fat 8g 11%
Saturated Fat 4g 21%
Cholesterol 43mg 14%
Sodium 619mg 27%
Total Carbohydrate 32g 12%
Dietary Fiber 3g 12%
Total Sugars 4g
Protein 22g
Vitamin C 13mg 64%
Calcium 57mg 4%
Iron 2mg 11%
Potassium 984mg 21%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.

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