A classic comfort food dish featuring ground beef or lamb cooked with vegetables in savory gravy, topped with cheesy mashed potatoes, and baked to golden perfection.
Use russet potatoes for fluffy mashed potatoes that brown beautifully., Drain potatoes well and let them sit in the hot pot to evaporate excess water to keep topping from being watery., Do not overmix mashed potatoes to keep them light and fluffy., If the meat filling is too thin, simmer longer to reduce or add more flour mixed with cold broth before simmering., Always place baking dish on rimmed sheet pan to catch drips and protect oven., Rest the pie for 15 minutes after baking to help gravy thicken and make slicing easier., Substitute cheddar cheese for Parmesan or add cream or sour cream for richer mashed potatoes., For fresh vegetables, sauté briefly with onions before adding meat for better flavor and texture., Ground beef or lamb can be used; turkey, chicken, or pork are also options with adjustments., Vegetarian versions can use lentils, mushrooms, or plant-based crumbles with seasoning adjustments., The assembled dish can be refrigerated up to 3 days before baking; bring to room temp before baking., Freeze assembled dish for 2-3 months in a freezer-safe dish; thaw overnight before baking or bake longer from frozen., Reheat leftovers in microwave or oven; oven reheat with foil to keep moist, remove foil to crisp topping.