15-Minute Mississippi Pot Roast Sandwich

Prep: 5 minCook: 5 min1 servingsmediumamerican
Mississippi Pot Roast Sandwich with Melted Provolone

Open-faced sandwich built on a toasted Italian sub bun with roasted garlic aioli, shredded leftover mississippi pot roast, crispy fried onions, and melted provolone cheese. Finished with pepperoncini peppers and served with au jus for dipping. Quick assembly transforms pot roast leftovers into a restaurant-quality handheld meal.

Ingredients

1 servings
  • 1 6-inch italian sub bun, cut lengthwise
    french roll1:1bread

    similar structure

  • 2 tablespoons roasted garlic aioli, spread
  • 3 ounces leftover mississippi pot roast, shredded or pulled
  • crispy fried onions, homemade or store-bought
  • 2 slices provolone cheese, whole
    swiss1:1cheese

    mild alternative

    Full guide →
  • 2 tablespoons sliced pepperoncini peppers, more or less(optional)
    banana peppers1:1peppers

    milder heat

  • au jus, for serving

Instructions

  1. 1

    Preheat broiler to high.

  2. 2

    Cut sandwich roll in half lengthwise and place cut-side up on a rimmed baking sheet.

  3. 3

    Toast on middle rack until lightly golden.

  4. 4

    Spread garlic aioli on toasted roll.

  5. 5

    Layer with pot roast, crispy fried onions, and provolone cheese.

  6. 6

    Return to oven until cheese melts.

  7. 7

    Top with sliced pepperoncini peppers.

  8. 8

    Serve with au jus for dipping.

Tips

Tip 1

Toast the bun lightly to prevent it from becoming soggy when topped with warm ingredients.

Tip 2

Have all toppings ready before broiling to assemble quickly while cheese melts.

Tip 3

Use leftover pot roast at room temperature or gently warmed for best flavor distribution.

Good to Know

Make Ahead

Prepare garlic aioli and fried onions in advance. Assemble and broil just before serving for best texture.

Serve With

Serve immediately with small bowl of au jus on the side for dipping.

See pairing guide →

Common Mistakes

Watch

Over-toast the bun to avoid a hard, dry texture.

Watch

Add pepperoncini before broiling to avoid losing acidity and flavor from the heat.

Substitutions

italian sub bun
french roll1:1bread

similar structure

provolone
swiss1:1cheese

mild alternative

Full guide →
pepperoncini
banana peppers1:1peppers

milder heat

provolone
cheddar1:1cheeseadds dairy

sharper flavor

Full guide →
Find more substitutions →