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Leftover prime rib sandwich on a marble board.

Leftover Prime Rib Sandwich

  • Author: Erin Jensen
  • Prep Time: 5 minutes
  • Cook Time: 0 minutes
  • Total Time: 5 minutes
  • Yield: 1 sandwich 1x
  • Category: Sandwich
  • Method: Counter Top
  • Cuisine: American


Leftover Prime Rib Sandwich – a wonderful way to enjoy your leftover prime rib – super easy & packed with great flavors!




  1. Butter two pieces of bread.
  2. Place sliced prime rib on one side of bread.
  3. Top with horseradish sauce and caramelized onions.
  4. Place other piece of bread on top, buttered side down. 
  5. Cut in half and serve. 


  • Type of Bread: feel free to use whatever type of bread you want!

Keywords: leftover prime rib sandwich