Pre Heat your oven to 450 for the potatoes. Heat your grill to medium-high for the steak. (If you don’t have a grill, use a grill pan or heavy skillet on medium high heat and add about 2 minutes cooking time.) Stir together the Zesty Ranch and Buffalo.
Spread the potatoes on a large rimmed baking sheet. Toss with 3 tablespoons Buffalo Ranch and season with salt and pepper. Bake until browned and tender, about 20 minutes. Toss the scallions, jalapeno, and cumin on top and roast 5 more minutes.
While the potatoes roast, rub the steaks with the Slow Roasted Garlic and season with salt and pepper. (This can be done up to 1 day ahead.)
Grill the steaks until medium rare, about 4 minutes per side. Let the steak rest at least 5 minutes before slicing.
Serve the sweet potatoes topped with sliced steak, avocado, cilantro, and the remaining Buffalo Ranch.