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Crispy French Dip Grilled Cheese

The ultimate mashup of a classic French Dip and a gooey grilled cheese sandwich. Features roast beef, caramelized onions, and melted cheese on crispy sourdough with savory au jus for dipping.
Print Recipe
Prep Time 15 minutes
Cook Time 20 minutes
Total Time 35 minutes
Servings: 2 sandwiches
Course: Dinner, Lunch
Cuisine: American, Comfort Food
Calories: 750
Ingredients Equipment Method Notes

Ingredients
  

Sandwich Assembly
  • 4 slices sourdough bread thick cut
  • 8 oz deli roast beef thinly sliced
  • 4 slices Provolone cheese
  • 0.5 cup Gruyère cheese shredded (or Swiss)
  • 1 large yellow onion sliced thinly
  • 4 tbsp unsalted butter softened, divided
  • 2 tbsp mayonnaise optional for crust
Au Jus Dipping Sauce
  • 10.5 oz beef consommé or strong beef broth
  • 1 tsp Worcestershire sauce
  • 0.5 tsp garlic powder
  • 0.25 tsp dried thyme
  • 0.5 tsp soy sauce

Equipment

  • Skillet or Griddle
  • Small Saucepan
  • Spatula
  • Ramekins

Method
 

  1. In a small saucepan, combine beef consommé, Worcestershire sauce, garlic powder, thyme, and soy sauce. Simmer for 5-8 minutes, then keep warm.
  2. Melt 1 tbsp butter in a skillet over medium heat. Add sliced onions and cook for 10-12 minutes until caramelized and golden.
  3. Assemble sandwiches: Spread mayo/butter on outer bread slices. Layer inside with Provolone, roast beef, caramelized onions, Gruyère, and second Provolone slice.
  4. Melt remaining butter in the skillet over medium-low heat. Grill sandwiches for 3-4 minutes per side until bread is golden brown and cheese is melted.
  5. Let rest for 1 minute, slice diagonally, and serve immediately with warm au jus for dipping.

Notes

Ensure roast beef is not ice cold before adding to sandwich for better melting.