Easy Lamb and Aubergine Tagine

Ingredients

• 1 red onion, diced
• 1 tablespoon olive oil
• 2 aubergines, cut into 1cm / ½ inch cubes
• 4 cloves garlic, grated or crushed
• 2 cm fresh ginger, grated
• 1 teaspoon coriander seeds, ground
• 1 teaspoon cumin seeds, ground
• 1 teaspoon cinnamon
• 600 g diced lamb leg
• 400 g tin tomatoes
• 200 ml lamb stock
• 4 teaspoons harissa paste
• 1 tablespoon honey
• Salt and pepper, to taste
• 400 g tin chickpeas, drained
• 2 tablespoons coriander leaves, finely chopped