Steak & Brie Sandwich
This Steak & Brie Sandwich is everything you want in a gourmet sandwich. Tender slices of perfectly seared steak are layered with creamy brie, sweet caramelized onions, peppery arugula, and a simple garlic Dijon aioli on toasted ciabatta. It's rich, fresh, and surprisingly easy to make at home for the ultimate lunch or date night dinner.
Ingredients
Ingredients
- 1 steak ribeye, striploin, or sirloin, about 10-12 oz
- Salt and freshly cracked black pepper to taste
- 2 ciabatta buns
- 4-6 slices brie cheese
- 1 cup baby arugula
Caramelized Red Onion
- 1 red onion thinly sliced
- 1 tbsp olive oil
- Pinch of salt
Ultimate Sandwich Sauce
- 1/4 cup mayonnaise
- 1 tbsp Dijon mustard
- 1 garlic clove finely grated
- Salt and freshly cracked black pepper to taste
Instructions
- Heat the olive oil in a skillet over medium-low heat. Add the sliced red onion with a pinch of salt and cook, stirring occasionally, for 20 to 25 minutes until deeply golden and caramelized.
- Meanwhile, generously season the steak with salt and pepper.
- Heat a cast iron skillet over high heat. Sear the steak for about 3 to 4 minutes per side for medium-rare, depending on thickness. Transfer to a cutting board and let rest for 10 minutes before slicing thinly against the grain.
- While the steak rests, toast the ciabatta buns until lightly golden.
- In a small bowl, stir together the mayonnaise, Dijon mustard, grated garlic, salt, and pepper.
- Spread the sandwich sauce generously over both halves of each toasted bun.
- Layer the sliced steak onto the bottom bun, followed by the brie, caramelized onions, and baby arugula.
- Top with the remaining bun and serve immediately while the steak is warm and the brie is slightly softened.