Shepherd's pie is a comforting and filling dish that can be made with ground beef. Brown the ground beef in a skillet, then add diced onions, carrots, and peas. Cook until the vegetables are tender, then stir in tomato paste, Worcestershire sauce, and beef broth. Simmer the mixture for a few minutes to allow the flavors to meld together. Transfer the beef mixture to a baking dish and top with mashed potatoes. Bake in the oven until the mashed potatoes are golden and the filling is bubbling. This hearty and delicious beef shepherd's pie is perfect for a cozy dinner.