Cauliflower Tacos with Avocado Crema

Name: Cauliflower Tacos with Avocado Crema
Ingredients: Nonstick cooking spray, for the baking sheet; 1 cup very thinly sliced red cabbage; 1 cup very thinly sliced green cabbage; 2 limes, plus lime wedges, for serving; Kosher salt and freshly ground black pepper; 2 tablespoons olive oil; 1 tablespoon pureed chipotle in adobo; 2 teaspoons ground cumin; 1 teaspoon onion powder; 1 teaspoon garlic powder; 1 large head cauliflower, cut into florets; 1 ripe avocado; 1/4 cup fresh cilantro leaves, chopped, plus whole leaves, for garnish; 8 corn tortillas; 3 radishes, thinly sliced; Hot sauce, for topping, optional