Beef shepherd's pie is a comforting and hearty dish that can be made with ground beef. Start by browning the ground beef in a skillet, then drain off any excess fat. Add diced onions, carrots, and peas to the skillet and cook until the vegetables are tender. Season the mixture with salt, pepper, and any desired herbs or spices. Transfer the beef mixture to a baking dish and top it with a layer of mashed potatoes. Bake the shepherd's pie in the oven until the potatoes are golden and the filling is bubbling. This classic dish is perfect for a cozy dinner on a cold evening.