1

Preheat grill (or broiler).

2

Combine all ingredients except for steak and sauce in a large ziploc baggie. Add steak and seal bag. Turn to coat. Marinate in refrigerator for at least 30 minutes, turning every so often. Remove steak from baggie; pour reserved marinade into a medium saucepan.

3

Coat grill rack with cooking spray and cook steak 6 minutes on each side (or until desired doneness). Remove from heat and let stand for 5 minutes before slicing. Cut steak diagonally across the grain into thin slices. Keep warm.

4

While steak is grilling, add tomato paste and mustard to saucepan; stir well. Heat to medium-high and cook until reduced to 1 cup (about 7 minutes).

5

Serve steak drizzled with sauce.