Mixed Bean Falafel and Sweet Potato Hummus

Name: Mixed Bean Falafel and Sweet Potato Hummus
Ingredients: 350 g sweet potato, scrubbed and cut into small chunks; 1 tbsp. olive oil; 1 garlic clove, crushed; 3 tbsp. tahini; juice 1 lemon; 400 g tin mixed beans, drained and rinsed; 1/2 green chilli, deseeded and finely chopped; 1 red onion, roughly chopped; 3 garlic cloves, crushed; 2 tsp. ground cumin; 1 medium egg; 125 g self-raising flour; small handful each parsley and coriander, roughly chopped; 3 tbsp. olive oil, plus extra to grease; 150 g couscous; 150 mL hot vegetable stock