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I like the combination of sweet, nutty Gruyère and the slight sharpness of Parmigiano Reggiano in this galette. Sometimes instead of thyme, I use a slightly smaller amount of rosemary. For a special dinner, you can make potato galettes in individual tart pans. The amount of ingredients in the recipewill fill (with a little to spare) four 4-1/2-inch tart pans with removable bottoms. Baking times will be just slightly shorter, but remember, you can bake these ahead, remove them from the tart rings, and reheat them on a baking sheet. A mini galette makes a lovely bed for a slice of beef tenderloin with a little sauce.
- 1⁄4 cup shallot, finely chopped (from about 2 large shallots)
- 3 tablespoons extra virgin olive oil, plus
- 1⁄2 teaspoon extra virgin olive oil, for the pan (or use olive-oil spray for the pan)
- 1 lb yukon gold potato, unpeeled and scrubbed (about 2 large or 3 medium)
- 1 teaspoon fresh thyme, lightly chopped
- kosher salt
- 1⁄2 cup parmigiano-reggiano cheese, finely grated (about a 1-1/2-ounce piece, grated on a box grater's small holes)
- 1 cup gruyere cheese, finely grated (about 3-1/2 ounces)
- Combine the shallots and 3 tablespoons of the oil in a small saucepan and bring to a simmer over medium heat; Reduce to a low simmer; cook the shallots until nicely softened (don’t let them brown), about 2 minutes; Remove from the heat and let cool completely (about 25 minutes at room temperature; cool them more quickly in the refrigerator if you like).
- Heat the oven to 400°F; Rub the bottom and inside edge of a 7-1/2-inch tart pan with a removable bottom with the remaining 1/2 teaspoon olive oil or spray with olive-oil spray; Put the tart pan on a rimmed baking sheet lined with foil.
- Slice the potatoes as thinly as possible (about 1/16 inch) with a chef’s knife; Put the potato slices in a mixing bowl, add the shallots and olive oil along with the herbs and toss well to thoroughly coat the potatoes.
- Cover the bottom of the tart pan with a layer of potato slices, overlapping them slightly; Start along the outside edge of the tart pan and, making slightly overlapping rings, move inward until the bottom is covered with one layer of potatoes.
- Sprinkle the potatoes with salt and then sprinkle about one-quarter of the Parmigiano and about one-quarter of the Gruyère over all; Repeat, until you have four layers of potatoes; Top the last layer with any remaining cheese.
- Bake the galette until the top is a reddish golden brown and the potatoes are tender in all places (a fork with thin tines should poke easily through all the layers), 45 to 50 minutes; The bottom will be crisp and the sides brown.
- Let the galette cool for 10 or 15 minutes in the pan; It will then be cool enough to handle but still plenty hot inside for serving; Run a paring knife around the edge of the galette to loosen it and carefully remove the tart ring by gently pressing the tart bottom up; Slide a very thin spatula under and all around the bottom layer to free the galette from the tart bottom; Use the spatula to gently slide the galette onto a cutting board. Cut into four or six wedges, or as many as you like.