500g lean Scotch Beef steak mince (5% fat)

30ml Scottish rapeseed oil

1 x red onion, finely chopped

2 x garlic cloves, minced

1 x green or yellow pepper, finely chopped

1 x 400g tin of pinto or kidney beans, drained

30g Mexican spice mix or Taco seasoning

20g tomato puree

100ml boiling water

2 x little gem lettuces, shredded

2 x large vine tomatoes, finely chopped

2 x avocado, halved and chopped finely

120g fat free yoghurt

Juice of 1 lime

150g lighter cheddar cheese, grated

12 x corn taco shells