Ingredients

• 6 russet potatoes (about 8 ounces each)
• 3 tablespoons unsalted butter, melted
• Kosher salt and freshly ground pepper
• 1 cup grated sharp cheddar cheese
• 1 cup grated muenster cheese
• 1/4 cup grated parmesan cheese
• 3 to 4 tablespoons horseradish
• 1/4 cup sour cream
• 3 scallions, finely chopped

Instructions

1. Preheat the oven to 350 degrees F. Pierce the potatoes a few times with a fork. Place directly on the center oven rack and bake until tender, about 1 hour. Let cool slightly.
2. Increase the oven temperature to 450 degrees F. Halve the potatoes lengthwise and scoop out the flesh, leaving a 1/4-inch-thick shell; reserve half of the flesh in a bowl (save the rest for another use). Brush both sides of the potato skins with 2 tablespoons melted butter and season with salt and pepper. Arrange skin-side up on a baking sheet and bake until crisp, about 15 minutes.
3. Meanwhile, mash the potato flesh with a fork; mix in the cheddar, muenster, parmesan, 2 tablespoons horseradish and the remaining 1 tablespoon melted butter. Stuff into the potato skins, return to the oven and continue baking until golden, about 8 minutes.
4. Mix the sour cream with the remaining 1 to 2 tablespoons horseradish. Spoon on the potato skins and sprinkle with the scallions.
5. Photograph by Anna Williams