| Season beef cubes with salt and pepper. In a large skillet, heat butter over medium heat. Add beef and cook until sides are brown. Move beef to the side of skillet and add onion; cook until softened, approximately 3-5 minutes. Slide onions to the side of the skillet with the beef. Add flour and cook for 1 minute. Pour in beef consomme and mushrooms. Stir to combine while sauce thickens. Reduce heat and simmer, covered, for 1 hour. When meat is tender, cook noodles according to package; drain. Serve stroganoff over cooked noodles. | 
