Roquefort, Leek and Walnut Tart
The open-face Alsatian tarte flambée can be as versatile as a quiche. Most often it’s given classic treatment, with bacon and onions on a pastry-lined bed of crème fraîche and fromage blanc. But why stick to tradition? You can make it with mushrooms, omit the bacon and dot it with caviar, add smoked salmon, pave it with zucchini slices, and explore other cheeses, including Taleggio and chèvre. Here’s an assertive version that keeps the bacon but opts for Roquefort cheese, leeks and walnuts. And instead of pizza dough, which is a typical underpinning, for a more expedient result, you can make it with pie pastry.
- Serves: 6 persons
- 1 ½cups/180 grams all-purpose flour, plus more for rolling
- ½teaspoon baking powder
- ½teaspoon salt
- 1large egg yolk
- 1tablespoon extra-virgin olive oil
- 2strips thick-cut smoked bacon, diced (about 2 ounces)
- 1cup chopped leeks, white part with a little light green
- ⅓cup chopped walnuts
- 4ounces Roquefort cheese, or other blue-veined cheese
- 3tablespoons crème fraîche
Step 1Blend together flour, baking powder and half the salt in a bowl or a food processor. Beat egg yolk with 5 tablespoons cold water. Stir in olive oil. Pour this mixture over the flour mixture and beat with a fork if using a bowl, or pulse about a dozen times in the processor, until dough starts to come together. Add another teaspoon or two of water if mixture is too dry.
Step 2Gather dough together and knead briefly on a lightly floured surface to form into a ball. Roll and trim to make an oblong 9 by 13 inches or a 12-inch round. Place on a parchment-lined baking sheet. Fold up a half-inch border all around either shape. Heat oven to 400 degrees.
Step 3Spread bacon in a heavy skillet and cook until very lightly browned. Stir in leeks and remaining salt and cook until softened and translucent. Stir in walnuts, sauté about 30 seconds, and remove from heat. Mash Roquefort and work in crème fraîche. Spread on pastry. Scatter leek, bacon and walnut mixture evenly on top. Bake 20 minutes, allow to cool briefly, cut in squares or wedges and serve.