Cut the steak into bite size pieces, about 1" cubes. Trim any fat or tendons. Season meat well with salt and pepper, tossing to distribute evenly. Divide the meat in half to be cooked in two batches. 

Heat 1 tbsp olive oil in large stainless steel frying pan over high heat. When oil is very hot and begins to smoke, place the first batch of steak in the pan in a single layer. Cook it without disturbing for about 1 min or so, until that side is browned and seared. Flip the steak and sear the opposite side for another minute or so.

Pour in 1 tbsp of sherry and shake pan to evenly distribute. Immediately transfer the steak to a plate for medium-rare, or let it cook for another minute before transferring for more of a medium doneness. Be careful not to overcook.

Add the remaining tbsp of olive oil and repeat the above steps with the second batch of steak bites.

Serve the steak bites on top of a pool of roasted red pepper sauce, garnished with sprigs of fresh thyme.