Root Vegetable and Chickpea Tagine (Vegan)

• 1 tablespoon olive oil
• 1 onion diced
• 1 leek sliced
• 2 cloves garlic crushed or grated
• 1 teaspoon cumin ground
• 1 teaspoon Coriander ground
• ½ teaspoon chilli flakes (or as much as you like!)
• 750 g mixed root vegetables chopped into roughly 2cm / ¾inch chunks (I used potatoes, carrots and butternut squash)
• 1 red pepper chopped into 2cm / ¾inch chunks
• 2 x 400 g tins chopped tomatoes
• Juice of half a lemon
• salt and pepper to taste
• 400 g tin chickpeas drained

To Serve:

• Coriander leaves optional
• pumpkin seeds optional
• Wholewheat couscous (or regular couscous) optional