Chicken Tikka Flatbreads

Name: Chicken Tikka Flatbreads
Prep time: 35 min
Cook time: 45 min
Total time: 1 h 20 min
Cuisine: Asian, Indian
Ingredients: 3 garlic cloves; 10 g fresh root ginger, peeled, cut in round slices (2 mm); 80 g onions, quartered; 20 g olive oil, plus 1 Tbsp for frying; 2 tsp ground cumin; 2 tsp ground coriander; 2 tsp paprika; 2 tsp garam masala; 1 tsp ground turmeric; 1 ½ tsp chilli powder; ½ tsp caster sugar; ½ tsp ground cinnamon; ½ tsp fine sea salt; 400 g tinned chopped tomatoes; 100 g double cream; 500 g chicken thighs, skinless, boneless, diced (2 cm); 4 naan breads (see tip); 1 red onion, sliced (5 mm); 100 g natural yoghurt; fresh coriander leaf, for garnishing