Created by Derf on April 18, 2012
Step 1: Preheat grill or broiler Combine first 7 ingredients (onion through garlic),in a large zip lock plastic bag. Add steak, seal bag. Marinate in refrigerator 20 minutes, turning once. (can be marinated overnight, if desired) Remove steak from bag, reserve marinade.
Step 2: Place steak on grill rack or broiler pan coated with cooking spray, cook 6 minutes on each side or until desired degree of doneness. Let stand 5 minutes. Cut steak diagonally across grain into thin slices, keep warm.
Step 3: While steak cooks,combine reserved marinade, tomato paste, and mustard in a medium saucepan over medium high heat, stirring well with a whisk. Bring to a boil, and cook until reduced to 1 cup (about 7 minutes). Serve the sauce with the steak.