Caramelized Onion and Mushroom Tart

Caramelized Onion and Mushroom Tart

A super simple puff pastry tart made with meaty mushrooms, caramelized onions, and plenty of garlic.

Ingredients

  • 8 ounces white mushrooms, washed, dried, and sliced
  • 6 tablespoons unsalted butter, divided
  • 2 large onions, peeled, halved, and thinly sliced
  • 2-3 sprigs fresh thyme, leaves only
  • 2 teaspoons granulated sugar
  • 3 cloves garlic, finely minced
  • a few grinds fresh black pepper
  • 1 cup grated cheese (I used Comté, but really anything mild would work here, even cheddar or mozzarella - just don't used Parmesan as it will be too salty)
  • 1 package frozen puff pastry, thawed
  • 1 egg, beaten
Read the whole recipe on The Crepes of Wrath