Preparation 1. Place cauliflower, pepper and onion in a medium microwave-safe bowl. Cover and microwave for 2 minutes, or until cauliflower has thawed and fresh veggies have softened. 2. Stir in taco seasoning and lime juice. Top with black beans and cheese, and microwave for 1 minute, or until hot. 3. Top with salsa, sour cream and cilantro.