Instructions
1. Prep and Preheat:
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Preheat your oven to 375°F (190°C). Grease a 9×13-inch or similar baking dish with butter or oil.
2. Cook the Meat Layer:
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In a large skillet over medium-high heat, cook the ground beef and diced onion until the beef is browned and the onion is softened. Drain off any excess grease.
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Season the mixture with garlic powder, salt, and pepper. Set aside.
3. Prepare the Cream Sauce:
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In a medium bowl, whisk together the cream of mushroom soup and milk until you have a smooth, pourable sauce.
4. Assemble the Casserole:
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First Layer: Arrange half of the thinly sliced potatoes in an even layer on the bottom of the prepared baking dish.
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Second Layer: Spread half of the cooked ground beef mixture over the potatoes.
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Third Layer: Pour half of the cream sauce evenly over the beef.
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Repeat: Repeat the layers with the remaining potatoes, beef, and cream sauce.
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Final Topping: Sprinkle the shredded cheddar cheese evenly over the top. For a golden finish, dust with paprika.
5. Bake to Perfection:
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Cover the baking dish tightly with aluminum foil and bake for 45 minutes.
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Remove the foil and continue baking, uncovered, for another 15-20 minutes, or until the potatoes are fork-tender and the top is bubbly and golden brown.
6. Serve:
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Remove the casserole from the oven and let it rest for 5-10 minutes before serving. This allows the layers to set for easier serving.
Pro Tips & Variations
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Potato Prep: For even cooking, try to slice the potatoes to a uniform thickness, about ¼-inch thick. A mandoline slicer works perfectly for this.
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Make it Cheesier: Feel free to add more cheese between the layers for an extra indulgent casserole.
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Add Veggies: Incorporate a layer of frozen mixed vegetables (like peas and carrots) between the meat and potatoes for a nutritional boost.
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Crispy Topping: For a crunchy texture, mix ¼ cup of breadcrumbs or crushed crackers with the shredded cheese before sprinkling it on top.
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Alternative Proteins: Ground turkey, chicken, or pork sausage can be used in place of the ground beef.