Combine ground beef, 1/3 cup condensed soup, bread crumbs, egg, salt, and black pepper in a large bowl. Shape into 6 oval patties.
Heat a large skillet over medium-high heat; add patties and brown on both sides. Drain excess fat.
Blend remaining soup and flour together in a small bowl until smooth; mix in ketchup, water, Worcestershire sauce, and mustard.
Pour soup mixture over patties in the skillet. Cover, and cook for 20 minutes, stirring occasionally.
ADVERTISEMENT
