Name: Leftover Prime Rib Sandwich Recipe
Prep time: 5 min
Total time: 5 min
Yield: 2
Cuisine: American
Ingredients: 1 Lb Leftover Prime Rib - sliced thin; 2 Ciabatta, French or Sourdough Rolls; 1 Lb Sweet Onions; Oil; 1-2 Tablespoons Prepared Horseradish; 1/4 Cup Mayonnaise; Spring Mix Greens

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So you made a prime rib roast and are lucky enough to have leftovers, make this Leftover Prime Rib Sandwich Recipe. Thinly sliced prime rib, horseradish mayo, caramelized onions and fresh greens make this the ultimate sandwich experience. Great for lunch or dinner.

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Prime Rib Caramelized Onion Sandwiches

These prime rib sandwiches come together quite easily using leftover prime rib roast. Slice the prime rib thin, caramelize some onions, mix the horseradish mayo then just assemble. Done.

Make this Boneless Prime Rib Roast In The Oven. Then make these Caramelized Onions for these awesome prime rib sandwiches.

I take my sandwiches very seriously. There are no plain mustard and bologna on white bread sandwiches happening at my house. These prime rib sandwiches are perfect without being overly fussy.

What To Serve With Prime Rib Sandwiches

The Prime Rib + Caramelized Onion Sandwiches could be considered a meal all on their own. But here are a few recipes that will go well served alongside:

Avocado Tomato Salad – Caprese Pasta Salad – Oven Roasted Potatoes – Pressure Cooker Artichokes

Ingredients Needed For Caramelized Onion Prime Rib Sandwiches (screenshot for grocery list)

Leftover Prime Rib
Ciabatta, French or Sour Dough Rolls
Sweet Onions
Prepared Horseradish
Mayonnaise
Spring Mix Greens

How To Make Leftover Prime Rib Sandwiches

Prepare caramelized onions.
Thinly slice the prime rib, as close to shaved as possible. (I leave it cold. If preferred, heat quickly in a skillet just until warm.)
Mix mayo and horseradish.
If toasting bread, brush with oil from caramelized onions and toast in the oven.
Spread horseradish mayo onto top and bottom of rolls. Layer greens, prime rib, onions and more greens. Serve.

Here are more sandwich recipes for all of you sandwich fans:

Hot Italian Sandwiches – Baked Pepperoni Pizza Sandwiches – Crockpot Pulled Pork Cuban Sandwiches – Baked Muffalata Sandwiches