"This rich and creamy casserole will be a new holiday (or weekday) favorite. Room temperature egg yolks and cream will blend into the mashed potatoes more easily; let them sit at room temperature 30 minutes before using. This cheesy casserole is the perfect side dish for Thanksgiving dinner or a Sunday supper...."
INGREDIENTS
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3 pounds russet potatoes, peeled and cut into 1-inch pieces (about 9 small potatoes)
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1 tablespoon plus 2 tsp. kosher salt, divided
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6 large egg yolks, at room temperature
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1 cup heavy cream, at room temperature
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1/4 cup unsalted butter, melted
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8 ounces white Cheddar cheese, shredded (about 2 cups)