Description
This French Dip Grilled Cheese sandwich combines tender roast beef, sweet caramelized onions, and melted Swiss cheese between slices of crisp, buttery French bread. Served alongside a warm, savory au jus for dipping, it offers a comforting and flavorful meal perfect for lunch or dinner. Easy to prepare in under 40 minutes, it’s a gourmet twist on the classic French dip sandwich with added cheesy indulgence.
Ingredients
Scale
Sandwich Assembly
- 8 slices crusty French bread
- 8 slices Swiss cheese
- 12 ounces thinly sliced roast beef
- 2 medium yellow onions, thinly sliced
- 4 tablespoons unsalted butter, plus extra for spreading
- 1 tablespoon olive oil
Au Jus Preparation
- 2 cups low-sodium beef broth
- 2 teaspoons Worcestershire sauce
- 1 teaspoon soy sauce
- 1 garlic clove, minced
- 1 sprig fresh thyme
- Salt, to taste
- Black pepper, to taste
Instructions
- Caramelize Onions: In a large skillet over medium heat, melt 1 tablespoon of butter with olive oil. Add sliced onions and sauté, stirring frequently, for about 12 to 15 minutes until they are deeply caramelized, golden brown, and jammy. Transfer to a plate and set aside.
- Prepare Au Jus: Wipe the skillet clean. In a small saucepan, combine beef broth, Worcestershire sauce, soy sauce, minced garlic, and fresh thyme. Bring to a gentle simmer over medium heat for 5 minutes. Season with salt and black pepper, then strain the mixture through a small strainer to remove solids. Keep warm for serving.
- Build Sandwiches: Lay out 4 slices of French bread on a work surface. On each, place 1 slice of Swiss cheese, a generous portion of roast beef, a scoop of caramelized onions, and a second slice of Swiss cheese. Top each with the remaining slices of bread, forming sandwiches.
- Butter the Bread: Spread unsalted butter evenly on the outsides of each sandwich, covering edge to edge for maximum crispiness when grilling. Use softened butter to prevent tearing the bread.
- Grill Sandwiches: Heat a clean skillet or griddle over medium heat. Place sandwiches butter-side down and cook for 3 to 4 minutes per side, pressing gently with a spatula to ensure even grilling. Flip when the bread is golden brown and crispy, and the cheese is melted inside.
- Serve: Remove the sandwiches from the skillet and slice each in half. Serve immediately with the warm au jus in small bowls for dipping, enjoying the rich, cheesy, savory flavors with each bite.
Notes
- Let the Swiss cheese come to room temperature before assembling for better melting.
- Maintain medium heat while grilling to avoid burning the bread before cheese melts fully.
- Take your time caramelizing the onions; their deep golden color adds essential flavor.
- Leftover sandwiches can be wrapped tightly in foil and refrigerated for up to two days; reheat in a toaster oven or skillet to keep crust crisp.
- Extra au jus stores for up to three days refrigerated; reheat gently on the stove before serving.
- Substitute provolone or Gruyère cheese for Swiss if desired.
- Use sturdy Italian bread or sourdough if French bread is unavailable.
- For a vegetarian option, replace roast beef with roasted portobello mushrooms and use vegetable broth for the au jus.
- Serve with a peppery arugula salad, French fries, pickles, or a bright side salad to balance the richness.
- Prep Time: 15 minutes
- Cook Time: 20 minutes
- Category: High-Noon Handhelds
- Method: Frying
- Cuisine: American
Keywords: French Dip, Grilled Cheese, Roast Beef Sandwich, Caramelized Onions, Au Jus, Comfort Food, Easy Lunch, American Sandwich
