1 (17.3 ounce) package frozen puff pastry (2 sheets), thawed in the refrigerator
2 egg yolks, beaten with 2 teaspoons water
Heat butter in a large skillet over medium-high heat. Add onions, bell peppers,
and celery. Season with the Essence, salt, and cayenne and cook, stirring, until
the onion is slightly soft, about 2 minutes.
Add garlic and cook, stirring, until fragrant, about 30 seconds.
Add flour and cook, stirring until the mixture is lightly golden, about
Add milk and continue stirring until the mixture is smooth and thick, about
Remove from heat. Add crawfish tails, cheese, green onions, and parsley.
Stir to mix well.
Remove from heat and let cool to room temperature.
Heat the oven to 425 degrees F.
Roll out each pastry sheet to 12 x 15 inches on a lightly floured surface.
Trim the edges to make them even. With a sharp knife, cut each sheet into 20
Mound about 2 teaspoons of the crawfish mixture in the center of each square,
brush 2 edges of the squares with the egg wash, fold over diagonally, and seal.
Crimp the edges with a fork. Lightly brush the tops of the turnovers with some
of the egg wash. Using the tip of a paring knife, make a tiny slit in the top
of each turnover so that steam can escape during baking.
Line a baking sheet with aluminum foil or parchment paper. Place turnovers
about an inch apart on the sheet and bake until golden, 12 to 15 minutes.
Remove from the oven and let cool for 5 minutes before serving.