Saute steaks in 2 tablespoons butter in large skillet, turning once so both sides are seared and meat is medium rare (or as you like it), allowing 6-7 minutes per side for rare. Pour fat from pan and add wine, shallots, thyme, and a little salt and pepper. Simmer until wine has almost evaporated and becomes a thick syrup.
Remove pan from heat and stir in butter a spoonful at a time until sauce is smooth and thick. Adjust seasonings, stir in parsley and spoon over steaks. 4 servings.