Get your steak out of the fridge for a least 30 minutes before you want to cook it.
Once it’s at room temperature. Season it with salt and fry either side for 2 minutes.
Take out and leave to rest
Thinly slice your green pepper and white onion and fry in the pan you have just cooked the steak in.
Whilst they are softening you can toast your bread. You can either do this in a toaster or lightly coat it in olive oil and toast it in a dry pan or griddle pan.
Once your bread is toasted you can slice your steak into thin strips.
Separate the onions and pepper into two piles and spread out evenly. Place the steak on top of the piles and layer on the cheese.
Place a lid over the frying pan and allow the cheese to melt.
Once melted you can scoop the goodness onto the bread.
Enjoy!