These cheesy scalloped potatoes are simple to make and taste amazing. Scroll down for the printable scalloped potatoes recipe.
Preheat oven to 350°F and butter your pan. Then line half of the potatoes on the bottom of the pan.
In a small sauce pan, melt the butter and then add in garlic. Cook for 1-2 minutes. Whisk in flour, salt and pepper and cook another minute.
Next, slowly whisk in milk until smooth. Bring to a light simmer (to thicken) and then stir in 3/4 cup cheese until melted. Remove from heat.
Pour half of sauce over potatoes and then sprinkle cheese over top (about 1/2 cup). Then line remaining potatoes on top and add remaining sauce and cheese.
Bake scalloped potatoes for 50-60 minutes (uncovered) until they are fork tender and golden on top.
I LOVE adding lots of cheese to my scalloped potatoes but you can certainly cut down on the cheese if you prefer. I wouldn’t cut the cheese from the sauce, but you could cut it from adding as much to the top. But since it’s the holidays, you might as well go all out. 🙂

3 tablespoons butter
1 small white or yellow onion, peeled and thinly sliced
4 large garlic cloves, minced
3 tablespoons all-purpose flour
1 cup chicken stock or vegetable stock
2 cups milk (I used 2% low-fat milk)
1 teaspoon Kosher salt
1/2 teaspoon black pepper
2 teaspoons fresh thyme leaves, divided
4 pounds Yukon Gold Potatoes, sliced into 1/8-inch rounds (and peeled beforehand, if desired)
1 1/2 cups freshly grated sharp cheddar cheese, divided
1/2 cup freshly grated Parmesan cheese


Preheat oven to 400°F.
Melt butter in a large saute pan over medium-high heat. Add onion, and saute for 4-5 minutes until soft and translucent. Add garlic and saute for an additional 1-2 minutes until fragrant. Stir in the flour until it is evenly combined and saute for an additional 1-minute. Pour in the stock, and whisk until combined. Add in the milk, salt, pepper, and 1 teaspoon thyme, and whisk until combined. Continue cooking for an additional 1-2 minutes until the sauce comes to a simmer (not a boil) and thickens. Then remove from heat and set aside.
Meanwhile, grease a 9 x 13-inch baking dish with cooking spray. Then spread half of the sliced potatoes in an even layer on the bottom of the pan. Top evenly with half of the cream sauce, the sprinkle evenly with 1 cup of the shredded cheddar cheese, and all of the Parmesan cheese. Top evenly with the remaining sliced potatoes, the remaining half of the cream sauce, and the remaining 1/2 cup of cheddar cheese.
Cover the pan with aluminum foil and bake for 30 minutes. Then remove the foil and bake uncovered for 25-30 minutes, or until the sauce is bubbly and the potatoes are cooked through.
Remove and sprinkle with the remaining 1 teaspoon thyme. Serve warm.
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