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RECIPE: Kale, Mushroom, and Fontina Slab Pie
- Yield: Serves 10–15 1x
Description
In this simple recipe, seasonal veggies and melty cheese are layered between two slabs of store-bought, all-butter puff pastry to create a large-format Hot Pocket for grownups. It’s easy, impressive, vaguely nostalgic, and absolutely delicious.
Ingredients
Units
Scale
- 2 Tbsps olive oil
- 2 shallots, or 1 medium yellow onion, sliced
- 2 cups mushrooms, sliced
- Salt and pepper
- 1 bunch kale, coarsely chopped
- 1 egg
- 2 sheets all-butter frozen puff pastry, thawed but still chilled
- 1 1/2–2 cups shredded melty cheese such as Fontina, Comté, or Gruèyere
- Flaky salt, such as Maldon
Instructions
- Heat the olive oil in a heavy-bottom skillet over medium heat and sauté the shallots or onions until soft and fragrant, about 5 to 7 minutes. Add the mushrooms and cook until soft. Season with salt and pepper. Add the kale and 1/4 cup water, cook until everything is wilted, then transfer to a strainer to drain and cool.
- Preheat the oven to 400°F. Beat the egg with 1 tablespoon of water and set aside. Working one at a time, roll out the first slab of puff pastry on a lightly-floured work surface to about 10-by-13 inches. Transfer to a large baking sheet and top with the sautéed veggies and cheese; leaving a 1-inch border around the edge. Season with salt and pepper.
- Brush the border with the egg wash. (If you don’t have a brush, just use your fingers.) Roll out the second slab and gently place it on top of the first. Crimp the edges with your fingers. Brush the top with more egg wash and poke a few holes for steam vents throughout the top with a fork or a knife.
- Bake for 35 to 40 minutes or until golden brown and flaky. For optimal crispiness, set the pan on the bottom rack of the oven. Cool for at least 15 minutes before cutting into squares and serving.
Notes
- Pie can be made up to 3 days ahead and reheated.
- Other fun filling ideas include mushroom and Gruyère; caramelized onion and Comté; and blue cheese, pear, and walnut.
- Scrambled egg can be added to instantly transform this into an elegant brunchtime dish.
- A layer of cooked sausage or bacon pairs well with just about anything.
