Parsnip - Onion Tarte Tatin

We went vegetarian this weekend.  Our favorite kale salad and this tarte. So delicious and light.

Parsnip - Onion Tarte Tatin

2 tablespoons olive oil
1 large yellow onion, cut into 1/4 inch rounds and separated into rings
3 springs thyme
1/2 teaspoon sugar
salt and pepper
3 medium parsnips, peeled and cut into 1/8 inch rounds
All purpose flour for work surface
1 sheet frozen puff pastry thawed

1. Preheat oven to 400 degrees .  In a 10 inch ovenproof skillet, heat oil over medium-high.  Add onion, thyme, and sugar and cook until onion is softened, about 8 minutes; season with salt and pepper.  Reduce heat to medium and spread onions evenly in pan.  Add parsnips in an even layer.  Cover, and cook until almost tender.  8 minutes.

2. On a lightly floured work surface, trim pastry into a 10 inch round .  Top parsnips with pastry.  Bake until pastry is puffed and golden.  20 minutes.  Let cool on a wire rack. 10 minutes, then invert.