INGREDIENTS
1 lb
Sirloin steak
1 1/2 cups
Arugula
1
Red onion, medium
1/3 cup
Mayonnaise
1/4 cup
Mustard, whole-grain
1/4 tsp
Black pepper, freshly ground
1 tbsp
Granulated sugar
2 tsp
Kosher salt
1
Cooking spray
1 cup
Distilled white vinegar
4
Onion rolls
1 cup
Water