Cheesy Mashed Potato Casserole with Parmesan, Browned Butter, and Sage

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Appears in Cook's Country October/November 2020

Irresistibly cheesy potatoes that can be made ahead? Your Thanksgiving just got a whole lot easier (and tastier).

SERVES10 to 12

TIME1½ hours, plus 30 minutes cooling

WHY THIS RECIPE WORKS

We wanted irresistibly cheesy mashed potatoes that could be made ahead of time. To start, we sliced 4 pounds of Yukon Gold potatoes (enough to ensure a full casserole dish) and boiled them in well-seasoned water. Once they were completely t...

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