Go Back
The Boat Shed Kitchen

Hot Roast Beef Sandwich

This Hot Roast Beef Sandwich is the ultimate comfort food, layered with tender roast beef, caramelized mushrooms and onions, melted provolone, and a creamy horseradish kick. Perfect for an easy weeknight dinner or a hearty weekend lunch!
Print Recipe Pin Recipe
Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Servings: 4
Calories: 630
Ingredients Method Notes

Ingredients
  

  • 2 tablespoons butter
  • 8 ounces sliced cremini mushrooms
  • 1 cup sliced onions
  • 2 tablespoons flour
  • ½ teaspoon dried thyme
  • ½ teaspoon garlic powder
  • 1½ cups beef stock
  • ¼ cup half and half
  • 1 pound sliced roast beef leftover steak or pot roast works too
  • 4 ciabatta rolls sliced in half
  • 8 slices provolone cheese
  • 1 cup horseradish sauce

Method
 

  1. Heat butter in a skillet over medium heat.
  2. Add mushrooms and onions, sauté until softened.
  3. Sprinkle flour, thyme, and garlic powder over veggies. Stir and cook 1–2 minutes.
  4. Whisk in beef stock. Reduce heat and simmer until slightly thickened.
  5. Stir in half and half, cook 1 minute.
  6. Add roast beef and heat through. Turn off heat.
  7. Preheat broiler. Divide beef mixture among roll bottoms. Top with provolone.
  8. See full steps with tips & photos → https://theboatshedcafe.com/hot-roast-beef-sandwich/

Notes

  • Swap ciabatta with hoagie rolls or French bread for variety.
  • Leftover pot roast works beautifully in this recipe.
  • Add sautéed peppers for extra flavor.