
The Best Classic Shepherd's Pie - AKA Shepards Pie or Cottage Pie. Ground Beef (or lamb) with vegetables in a rich gravy, topped with cheesy mashed potatoes and baked.
Add the oil to a large skillet and place it over medium-high heat for 2 minutes. Add the onions. Cook 5 minutes, stirring occasionally.
Place the potatoes in a large pot. Cover the potatoes with water. Bring the water to a boil. Reduce to a simmer. Cook until potatoes are fork tender, 10-15 minutes.
Pour the meat mixture into a 9x9 (or 7x11) inch baking dish. Spread it out into an even layer. Spoon the mashed potatoes on top of the meat. Carefully spread into an even layer.