I hadn’t expected the smoky edge of chipotle and the tenderness of marinated steak to taste this good off the griddle. These Blackstone steak kabobs begin with a long, flavor-packed soak in a bold chipotle marinade, then hit the hot flat-top to caramelize alongside peppers, onions, and mushrooms. This is the kind of easy Blackstone dinner that makes weeknights feel like a backyard feast.
Start by making the marinade. Add the oil, soy sauce, beef broth, chipotle pepper, tomato paste, brown sugar, salt, chili powder, cumin, and garlic powder to a blender. Process until smooth.
Reserve ¼ cup of the marinade. Place the beef in a shallow dish and pour the remaining marinade over it. Marinate at room temperature for an hour, or refrigerate overnight.
Preheat your griddle to medium-high heat.
Toss the vegetables with the remaining marinade, and thread onto skewers alternating with the beef pieces.
Cook with your griddle lid down for 4 minutes. Turn, and continue to cook for another 3 to 5 minutes, until the vegetables have softened and the beef is cooked to the desired temperature.