Classic Cheesy Potatoes are the ultimate comfort food, blending creamy, cheesy goodness with perfectly cooked potatoes. This dish is a family favorite, ideal for gatherings or just a cozy night in.
The star of the show is, of course, the potatoes. I prefer russet potatoes for their fluffy texture when baked. They hold up well and soak in all the delicious flavors. Cheddar cheese adds that classic cheesy flavor we crave, but feel free to experiment with other cheeses. The sour cream brings a tangy richness that complements the cheese perfectly. Butter is essential for starting our cheese sauce, offering a rich base that carries the flavors of the onion and garlic. These two aromatics add depth and fragrance, while a touch of salt and pepper enhances everything. The flour acts as a thickening agent, and whole milk gives the sauce its creaminess without being too heavy.
Cheesy potatoes pair wonderfully with roasted or grilled meats, like chicken or beef. Serve them alongside a crisp green salad with a tangy vinaigrette to balance the richness. They're also fantastic as part of a brunch spread, alongside eggs and bacon.
First, preheat your oven to 375°F. This gives you time to prepare the other ingredients without rushing. In a large saucepan, melt the butter over medium heat. As it starts to sizzle, toss in the chopped onion and minced garlic. Stir them around until they're translucent and fragrant, which should take just a few minutes.
Next, sprinkle in the flour, salt, and pepper. Stir everything together for about a minute to let the flour cook a bit — this prevents the sauce from having a raw flour taste. Gradually whisk in the milk, continuing to stir as you go. You’ll notice the sauce starting to thicken after about five minutes.
Remove the pan from the heat and stir in the sour cream and one cup of shredded cheese, mixing until the cheese melts smoothly into the sauce. Now it's time to layer: grease a 9x13 inch baking dish and arrange half of your sliced potatoes on the bottom. Pour half the cheese sauce over them, spreading it evenly. Repeat with the remaining potatoes and sauce, then sprinkle the remaining cup of cheese on top.
Cover the dish with foil and bake for 45 minutes. Then, remove the foil and continue baking for another 15 minutes. This step ensures the top becomes beautifully golden and bubbly. Let the dish cool slightly before serving. This helps the layers set a bit, making it easier to serve.