Slice your cauliflower into steaks and line a baking sheet with parchment paper. Preheat the oven to 400F.
In a container, combine your tahini, broth, sweet chili sauce, sriracha and garlic. Stir until smooth, adding more water or broth as needed to achieve a drippy salad dressing consistency.Lay your cauliflower onto the baking sheet and brush liberally on each side with the sauce.
Place in the oven for 15 minutes and then flip. Cook for an additional 20 minutes. Top with cilantro.