Cheesy chicken enchiladas with guacamole

Ingredients

• a glug of olive oil
• 2 onions, chopped
• 4 garlic cloves, chopped
• 1 tsp ground coriander
• 1 tsp paprika
• 4 skinless chicken breasts, cubed
• a handful of fresh coriander, chopped
• salt
• pepper
• 3 Tbsp canola oil
• 3 Tbsp flour
• 1 can tomato puree
• 2 Tbsp paprika
• 1 tsp ground cumin
• 1 tsp garlic powder
• 1 Tbsp light brown sugar
• 1 cup chicken or vegetable stock
• lemon juice, to taste
• 4 flour tortillas
• 1 cup grated cheddar
• 1 cup grated mozzarella
• 1 avocado, smashed
• a squeeze of lemon
• fresh coriander, for serving