INGREDIENTS
1 lb
Ground sirloin
4
Baby romaine lettuce, leaves
1
thick 4 (1/2-inch-thick) slices Beefsteak tomato
2
Garlic cloves
1 tbsp
Thyme, fresh
1 tbsp
Dijon mustard
1/4 tsp
Black pepper, freshly ground
3/8 tsp
Kosher salt
4
kaiser rolls or other sandwich rolls