Flatbread With Caramelized Onions & Cheese

• 2 tablespoons olive oil
• 3 large onions, chopped
• 1 tablespoon brown sugar
• 2 tablespoons balsamic vinegar
• 1/2 teaspoon salt
• 1/2 teaspoon pepper
• 1/2 lb frozen puff pastry (defrosted but cold)
• 6 ounces brie cheese, diced (rind removed)
• 6 ounces mild blue cheese, diced
• 2 tablespoons chopped fresh chervil or 2 tablespoons parsley

1. Heat oil over medium high heat in a large skillet.
2. Add onions; cook until wilted& starting to brown.
3. Add sugar, vinegar, salt& pepper.
4. Reduce heat& cook gently for 15- 25 minutes or until onions are caramelized& brown.
5. Cool.
6. Roll pastry into a rectangle approximately 12 x 16 inches. I don't use the sheets of puff pastry - I prefer to use the 375gm package of Tenderflake Puff Pastry. I start rolling it out on my counter, then I transfer it to my baking tray (which has been lined with parchment paper) and roll the pastry to fit the tray. Since puff pastry is very "forgiving", you can "cut & paste" if necessary.
7. Spread onions over pastry.
8. Dot with cheese& sprinkle with chervil.
9. If you are preparing this for a party, you can prepare to this point and refrigerate- then bake later.
10. Bake in preheated 400F oven for 20- 25 minutes or until cheese has melted& pastry is crisp.
11. When removed from the oven, it will be puffed right up but allow it to cool for 5 minutes & it will fall back down. Cut into 20 serving pieces - this is easier done with kitchen scissors instead of a knife - then cut each piece in half diagonally.

olive oil, onions, brown sugar, balsamic vinegar, salt, pepper, frozen puff pastry, brie cheese, blue cheese, chervil

Taken from www.food.com/recipe/flatbread-with-caramelized-onions-cheese-57294 (may not work)