Carmelized Onion & Apple Tart

Ingredients 

2 tablespoons olive oil
2 medium onions, sliced
2 red apples (such as Braeburn or Gala), cut into small pieces
Salt and Pepper
2 sheets frozen puff pastry (from a 17.3-ounce package), thawed
1/2 cup sour cream

Directions

Heat oven to 400º F. Heat the oil in a large skillet over medium heat. Add the onions and cook, stirring occasionally, until soft and golden brown, 12 to 15 minutes. Stir in the apples, ½ teaspoon salt, and ¼ teaspoon pepper and cook until just tender, 2 minutes.

Place each sheet of pastry on a parchment-lined baking sheet and prick all over with a fork. Spread with sour cream, leaving a ½-inch border. Top with the onion mixture and bake until the pastry is crisp and browned, 30 to 35 minutes. Cut into pieces before serving.

Made for Craft Night at Emily's September 2011. Made 18 pieces - Might want to half it for a smaller gathering.