Ingredients

  • The Ultimate Savory Pie Crust dough (see note)
  • 1/2 cup creme fraiche
  • 1/4 cup grated Pecorino Romano cheese
  • 1 medium red potato, very thinly sliced, preferably on a mandoline
  • 1 Granny Smith applehalved, cored and very thinly sliced, preferably on a mandoline
  • Melted unsalted butter, for brushing
  • 1 teaspoon thyme leaves
  • Salt
  • Freshly ground pepper
  • 1 large egg beaten with 1 tablespoon of water

Method

  • Preheat the oven to 450.
  • Line a large baking sheet with parchment paper.
  • On a lightly floured surface, roll out the dough to a 12-by-16-inch rectangle; transfer to the baking sheet.
  • Fold the dough edge over itself to form a 1/2-inch border all around and pinch the corners together.
  • Refrigerate until firm.
  • Spread the creme fraiche and pecorino over the dough; top with overlapping slices of the potato and apple in rows.
  • Brush with butter, sprinkle with thyme and season with salt and pepper.
  • Brush the edges with the egg wash.
  • Bake the galette in the bottom third of the oven for 25 minutes, or until the edges are slightly puffed.
  • Cut into squares; serve warm or at room temperature.