1 ½poundsbeef sirloin tips(or similar grilling steak), cut into 1 ½ inch cubes
1largered onionsliced into 1 ½ inch pieces
Instructions
Whisk together worcestershire sauce, vinegar, soy sauce, dijon mustard, garlic, brown sugar, and pepper. Add to a bag along with beef. Seal and marinate for 20 minutes or up to 14 hours (the longer the better!)
When ready to prepare, grease and preheat the grill. Skewer the onions and beef and grill over medium heat 8-10 minutes, turning throughout, until just cooked through or desired doneness is achieved. Serve garnished with parsley or cilantro if desired and steak sauce for dipping.
Notes
Pro tip: add mushrooms to take these to the next level!