Roasted Sweet Potato & Cauliflower Tacos

Ingredients

• 1 small head cauliflower, cut into bite-sized pieces
• 1 large, sweet potato, sliced into cubes
• 1 tbsp olive oil
• 1 tsp chilli powder
• 1 tsp ground cumin
• 1 tsp smoked paprika
• ½ tsp garlic powder
• ½ tsp dried oregano
• Salt
• pepper
• 1 lime, juiced
• 1 can black beans, drained & rinsed
• Flesh of 1 avocado, diced
• Mini tortillas, heated
• Fresh coriander, chopped
• Lime wedges, to serve
• Chipotle sauce, to serve