Preparing the Creamy Mashed Potatoes

While the beef mixture simmers, it’s time to prepare the creamy mashed potatoes. You will need approximately 2 pounds (900g) of Yukon Gold or russet potatoes. Boil the potatoes until tender, then mash them with butter, milk, and season with salt and pepper to your liking. The goal is to achieve a smooth and creamy consistency that will complement the beef layer beautifully.

Assembling the Casserole

Once both layers are ready, it’s time to assemble the casserole. Preheat your oven to 375°F (190°C) and grease a 9×13-inch baking dish. Start by spreading the beef mixture evenly across the bottom of the dish. Next, spoon or pipe the creamy mashed potatoes over the beef layer, ensuring an even coverage. Finally, sprinkle 1 to 1.5 cups of shredded cheese—such as cheddar, mozzarella, or Parmesan—on top.

Bake the casserole for 20 to 25 minutes, or until heated through and the cheese is golden and bubbly. For an extra crispy top, broil for an additional 1-2 minutes, but keep a close eye to avoid burning.