not a conventional steak sandwich

paul, the carpenter, has been jack hammering and sawing and generally ripping out my old laundry, so i thought it was important that he was fed meat - there used to be a commercial on television when i was young which encouraged people to feed the man meat.

600 grams rump steak, cut at least 2 1/2 centimetres thick, a generous 3 centimetres is better
seasoned salt
lemon pepper
butter
1 large onion, sliced
more butter
250 grams mushrooms, sliced
more butter
more seasoned salt
4 large slices of sourdough bread
yes yes....more butter...again...
a few rocket leaves (i used home grown because i had it in the garden)
slices of tomato

sprinkle seasoned salt lightly over the rump steak on both sides, then sprinkle the lemon pepper over the steak a little more generously, again on both sides. set aside.
place 2 tablespoons of butter in a cast iron pan or non stick pan and heat until bubbling and add the onions leave the onions a little while to colour before flippling them over. repeat until the onions are soft. remove them from the pan and set aside.
place another 2 tablespoons of butter in the pan and heat until bubbling and add the mushrooms. sprinkle lightly with seasoned salt and leave them for a litlle while to colour before flipping over. repeat until the mushrooms are done to your liking. remove them from the pan and set aside with the onions.
place 2 tablespoons again of butter in the pan and heat until bubbling and ensure the pan is well and truly heated and add the steak. leave the steak alone in the pan for 3 minutes. don't be tempted to fiddle with it. once the three minutes has elapsed, turn the steak over and leave it alone for another 2-3 minutes, depending on the thickness of the steak. if the steak is thin, 1 1/2 minutes might be best. remove the steak from the pan and allow it to rest.
butter the soughdough bread and toast the bread in the pan until golden.
slice the steak thinly, and hopefully, it will be rare, or at least rarish.
pile the steak onto 2 slices of bread generously. top with onions, mushrooms, rocket and tomato. place the 2 slices of bread remaining on top and serve.