Flaky Mushroom and Gruyère Tarts

By

  • 4
  • 20 mins
  • 45 mins

Ingredients

  • 1 sheet puff pastry (half a 17.3-ounce package), thawed
  • 4 tablespoons olive oil
  • 10 ounces assorted mushrooms (such as button, cremini, shiitake, and oyster), sliced
  • 1 shallot, sliced
  • kosher salt and black pepper
  • 1/4 cup dry white wine
  • 4 ounces Gruyère or sharp white Cheddar, grated (1 cup)
  • 1 teaspoon Dijon mustard
  • 1 teaspoon white wine vinegar
  • 4 ounces mixed greens (6 cups)
  • 2 radishes, thinly sliced
  • 1 tablespoon chopped fresh chives

Preparation

Step 1

Directions

Heat oven to 400° F. Unfold the pastry and cut it into 4 squares. Place the squares on a parchment-lined baking sheet and,
using a fork, prick the dough all over.

Meanwhile, heat 2 tablespoons of the oil in a large skillet over medium-high heat. Add the mushrooms and shallot and season
with ½ teaspoon salt and ¼ teaspoon pepper. Cook, tossing occasionally, until the mushrooms are browned and tender, 4 to 5
minutes. Add the wine and cook until nearly evaporated, about 1 minute more.

Dividing evenly, sprinkle the pastry squares with half the cheese, leaving a ½-inch border on each. Top with the mushroom
mixture and remaining cheese. Bake until the pastry is golden brown, 20 to 25 minutes.

In a large bowl, whisk together the mustard, vinegar, the remaining 2 tablespoons of oil, and ¼ teaspoon each salt and pepper.
Add the greens and radishes and toss to coat. Serve the tarts with the salad and sprinkle with the chives.