2 boneless beef top loin steaks -or-
1 boneless beef top sirloin steak, cut 1 in. thick
3 tablespoons light teriyaki sauce
1 large sweet onion (such as vidalia, walla walla, texas sweet or maui), cut into 1/2 inch thick slices

Brush 3 tablespoons teriyaki sauce evenly over both sides of beef steaks and onion slices. Place steaks and onion on grid over medium, ash-covered coals. Grill top loin steaks, uncovered, 15-18 minutes (top sirloin steak 17-21 minutes) until steaks are medium rare to medium doneness and onion is tender, turning occasionally.

PEANUT SAUCE:

2 tablespoons light teriyaki sauce
2 tablespoons creamy peanut butter
1/8 to 1/4 teaspoon crushed red pepper

Meanwhile in smal bowl, using fork, gradually stir 2 tablespoons teriyaki sauce and 2 tablespoons water into peanut butter and red pepper, mixing until smooth.