1/2 c. butter, room temp.
1/4 c. finely chopped red onion
1 boned sirloin steak (about 2 lbs.), 2 inches thick
1/2 c. hickory-smoked bottled barbecue sauce
1/4 c. bottled chili sauce
2 tbsp. finely grated fresh horseradish or 1 tbsp. bottled horseradish
1 tbsp. vegetable oil
2 tsp. minced garlic

In a 10 ounce tight sealing plastic food container, stir onion into butter. Cover and refrigerate at least 30 minutes. Place steak in a 13x9 inch rectangular tight sealing plastic food container.

In a medium sized bowl, mix remaining ingredients and pour over steak. Cover and marinate in a cooler or refrigerator at least 30 minutes, turning once. Grill or broil 4 inches from source of heat until desired doneness, about 20 to 25 minutes for medium doneness. Serve with flavored butter. Makes 4 servings.