1 teaspoon kosher salt
1/2 teaspoon freshly ground black pepper
4 tablespoons butter divided
6 ounces small crimini or button mushrooms sliced in half
Cut the steak into bite size pieces, about 1/2" - 3/4" in size. Sprinkle the meat generously with 3/4 teaspoon salt and pepper. Heat a heavy flat bottomed stainless skillet over medium high heat and add 1 tablespoon of butter. When the butter has melted, swirl to coat the pan. Add about a third of the meat and spread it across the pan. Cook for 1 minute and then use a large spatula to flip the pieces over. Cook 1 more minute. Use a spatula to remove the meat to a plate and then repeat with a second batch of meat pieces. Add an additional tablespoon butter to the skillet. The entire cooking process for the meat should only take a few minutes total. When the meat has finished cooking, loosely tent foil over the cooked steak bites on the plate. Add the remaining 2 tablespoons of butter to the hot skillet and toss the mushrooms in the butter. Sprinkle with the remaining salt and let the mushrooms cook without stirring for 2-3 minutes, until browned. Stir and let cook a few more minutes until soft. Add the mushrooms and the buttery pan drippings to the plate with the steak bites. Serve hot.
Notes:
The goal when cooking the meat is to create a crisply browned outside and a lovely pink and juicy center for each piece. As the meat is cooking, if a piece is slightly larger and has a side that looks like it hasn't browned, flip to that side again for 20-30 seconds. Take caution not to overcook the steak.