Cheesy Mashed Potato Gratin
@thatdudecancook shares a restaurant-worthy technique for the ultimate mashed potatoes. Creamy riced Yukon Golds are topped with a rich Gruyère and Fontina cheese sauce, then broiled until golden and bubbly.
@thatdudecancook shares a restaurant-worthy technique for the ultimate mashed potatoes. Creamy riced Yukon Golds are topped with a rich Gruyère and Fontina cheese sauce, then broiled until golden and bubbly.
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Peel the potatoes and chop them into uniform pieces. Place them in a large pot and cover with cold water.
Add a generous amount of salt to the water and bring to a boil. Cook until the potatoes are fork-tender.
Drain the potatoes well. Pass the hot potatoes through a potato ricer into a large mixing bowl.
Season the riced potatoes with salt. Add about 2 tablespoons of butter and about 1/2 cup of warm milk. Gently fold everything together with a spatula until just combined. Do not overmix.
In a separate saucepan over low heat, melt the remaining 2 tablespoons of butter. Whisk in the flour to create a roux and cook for 5 minutes, stirring constantly.
Increase the heat slightly and gradually whisk in the remaining 1.5 cups of warm milk until you have a smooth béchamel sauce.
Gradually add the shredded Gruyère and Fontina cheese to the sauce, whisking continuously until the cheese is fully melted and the sauce is smooth and creamy.
Spread the mashed potatoes in an even layer in an oven-safe skillet or baking dish.
Pour the cheese sauce evenly over the top of the mashed potatoes.
Place the dish under the broiler for a few minutes, until the top is golden brown and bubbly in spots. Watch carefully to prevent burning.
Remove from the broiler and garnish with freshly chopped chives before serving.
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