Moroccan chicken one-pot

INGREDIENTS

• 4 boneless, skinless chicken breasts
• 3 tbsp olive oil
• 2 onions , 1 roughly chopped, 1 sliced
• 100g tomatoes
• 100g ginger , roughly chopped
• 3 garlic cloves
• 1 tsp turmeric
• 1 tbsp each ground cumin , coriander and cinnamon
• 1 large butternut squash , deseeded and cut into big chunks
• 600ml chicken stock
• 2 tbsp brown sugar
• 2 tbsp red wine vinegar
• 100g dried cherries
• 1 small red onion , finely chopped
• zest 1 lemon
• handful mint leaves
• 100g feta cheese , crumbled
• couscous and natural yogurt