Ingredients

¼ cup mayonnaise (recommended: Hellmann’s® or Best Foods® Real)
2 tablespoons Hellmann’s® Dijonnaise
2 tablespoons prepared horseradish, drained
Salt and freshly ground black pepper
8 slices white cheddar, thinly sliced
½ red onion, thinly sliced crosswise
1 small bunch watercress
4 croissants, sliced through crosswise
1/2 pound, thinly sliced London broil or roast beef (from your deli department) or 1 ¼ pound flank steak, trimmed of excess fat and marinated in olive oil, chopped garlic and fresh thyme*

Directions

1. Whisk together the mayonnaise, Dijonnaise and horseradish in a small bowl, season with salt and pepper.
2. Heat a grill pan or griddle over medium heat.  Add 3 slices of beef in an even layer, next to each other and cook for 30 seconds per side, just to warm through.
3. Top the meat with 1 or 2 slices of the cheese, cover with a lid and let melt, about 20 seconds.
4. Spread some of the mayonnaise on both sides of each croissant. Layer on beef, cheese, onion and watercress.

Serves 4.

*If using the flank steak: Marinate for at least 2 hours and up to 24 hours.  Heat a grill to high or a grill pan over high heat until smoking. Season the steak with salt and lots of black pepper and cook on both sides until golden brown and slightly charred and cooked to medium-rare doneness, about 6 minutes per side.  Remove from the heat and let rest 10 minutes before slicing into thin slices against the grain of the meat.

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