Grilled Steak and Black Bean Tacos

Prepare grill for direct cooking. Combine cumin, chili powder, and garlic salt in small bowl; sprinkle evenly over both sides of steak. Coat steak and onion slices lightly with nonstick cooking spray.

Grill steak and onions, covered, over medium-high heat 4 to 5 minutes per side or until steak is barely pink in center and onion is tender.

Spray large skillet with cooking spray; heat over medium heat. Add garlic; cook and stir 30 seconds. Add beans, salsa, and tomato; cook and stir 5 minutes or until heated through.

Slice steak crosswise into thin strips; separate onion slices into rings. Serve in warm tortillas with salsa mixture and cilantro. Garnish with lime wedges and lime juice, if desired.