Roasted cauliflower sandwich features crispy, golden cauliflower steaks or florets as the hearty centerpiece, roasted with olive oil and spices like paprika, curry, or za'atar for bold flavor. Typical spreads include hummus, romesco sauce, aioli, or tahini, paired with fresh toppings such as lettuce, sliced tomatoes, red onion, arugula, pickles, and herbs. Bread options range from rye, sourdough, or ciabatta to whole-grain slices, often toasted or grilled.