BBQ Beef Chuck Steak

1 Beef chuck 7-bone steak, cut 3/4 to 1 inch thick (about 2 lbs)

Marinade:
1 cup finely chopped onion
1 cup ketchup
1/3 cup packed brown sugar
1/3 cup red wine vinegar
1 Tbsp Worcestershire sauce
1/8 to 1/4 tsp crushed red pepper

Combine marinade ingrediets in a medium bowl.  Tenderize or jacard meat as desired.  Place beef steak and 1 cup marinade in zip lock bag; turn to coat.  Close and marinate in refrigerator 6 hours or overnight, turning occasionally.  Refrigerate remaining marinade.

Remove steak; discard marinade.  Grill to desired temperature.  Place remaining marinade in small saucepan and bring to a boil.  Reduce heat; simmer 10-15 mins or until sauce consistency.  stirring occasionally.  Serve with steak.