Filet Mignon without cola potatoes

3 1/2 tablespoons unsalted butter 1 tablespoon all-purpose flour 1 cup beef stock or 1 cup store bought broth 1 lb beef tenderloin , trimmed sliced 1/4 inch[...]

4 beef tenderloin steaks (cut 1 inch thick, about 6 ounces each) 1 tablespoon butter 1 1/2 cups assorted mushrooms , cut in half if large (shiitake, enoki,[...]

4 beef tenderloin steaks (cut 1 inch thick, about 6 ounces each) 1 tablespoon butter 1 1/2 cups assorted mushrooms , cut in half if large (shiitake, enoki,[...]