Caramelized Leek Tatin

Directions

1. 1
   Cut the white part off of the leeks and cut into slices.
2. 2
   Slice the onions thinly.
3. 3
   Heat a little olive oil in a skillet on high heat and add the leeks and onion.
4. 4
   Cover and reduce the heat, simmer for 15 minutes, stirring occasionally.
5. 5
   Spread 4 tablespoons of brown sugar on the bottom of a pie pan. Add the sliced butter.
6. 6
   Preheat oven to 420F
7. 7
   Place the pie pan in the oven just to melt the butter and then remove it.
8. 8
   Uncover the skillet and turn up the heat.
9. 9
   To the skillet, add 4 tablespoons of sugar and 4 tablespoons of vinegar, sear the leeks and stir.
10. 10
    Spread this mixture out well in the pie pan.
11. 11
    Cover with the puff pastry and bake for about 15 minutes.
12. 12
    Unmold the tatin on a large plate by flipping it over.