INGREDIENTS
15
to 20 baby leeks or 3 large leeks, white and pale-green parts only
1 tbsp
unsalted butter
2 tbsp
extra-virgin olive oil
Coarse salt
1 tsp
finely chopped fresh thyme
1
box (14 ounces) frozen puff pastry, such as Dufour, thawed
1
large egg beaten with 1 tablespoon water
1/4 cup
freshly grated Parmesan cheese
Scant 1/4 cup Nicoise olives, pitted
4 oz
Pave d'Affinois or other soft-ripened cheese (such as Camembert or Perail), thinly sliced