Sweet potato tacos - Good Food Middle East

Ingredients

• 1 red onion, sliced
• 3 limes, juiced
• 4 sweet potatoes, peeled and cubed
• 2 tbsp olive oil
• 2 tsp hot smoked paprika
• 1 tsp ground cumin
• 1 tsp ground coriander
• 400g can of black beans, drained and rinsed
• 2 ripe avocados, mashed
• 2 large ripe tomatoes, deseeded and cubed
• 8 small flour tortillas
• 50g feta, crumbled (optional)
• soured cream and torn coriander to serve (optional)