Making the best steak fajitas is easy to do at home. You can make the marinade for the steak and veggies the night before; throw it all into a bag, and put it into your fridge. The fajita seasoning is a mix of cumin, paprika and chilli powder. You can also add other spices like oregano and garlic salt to mild the flavour a bit. Find out the recipe of best steak fajitas at home.