Pour off fat from skillet steak was cooked in or heat 1 tsp olive oil in a skillet over medium high heat. Add shallots and stir. Pour in wine and cook about 30 seconds. Add beef broth and bring liquid to a full rolling boil. Season with salt and pepper to taste. Continue cooking until reduce by 1/2. Reduce heat to a simmer.
Meanwhile, blend 2 teaspoons butter with 1 teaspoon flour. Stir into simmering sauce. Cook another minute or two until slightly thickened. Swirl in 1 teaspoon butter. Strain over meat and garnish with parsley.