Heat oil in a non-stick pan over a medium heat. Fry onion for 2/3 mins then add garlic & fresh chilli. Stir for a couple of mins until these start to change colour & soften. Then add chopped tomatoes, tomato purée, smoked paprika, bouillon powder & chipotle sauce. Keep stirring. Add 100ml if water. You might need a to add a bit more water as it cooks. Then add the tin of mixed beans & a large handful of chopped coriander. Season to taste.
Guacamole: scoop out the flesh of the avocados into a bowl & mash with a fork until nice & creamy. Add onions, garlic, chilli, lemon juice, coriander & mix together well. Add a sprinkle of salt & pepper to taste.
Heat tacos according to pack instructions. Fill with delicious smokey beans, avocado & top with yummy Koko Cheddar. Perfect Mexican night!