Tarte Tatin as many of us know is an upside down apple tart, where the apples are caramelized with butter and sugar, during baking. It was created by the Tatin sisters in France in the late 18th century. I really enjoy this apple tart more than any other apple tart or pie, because it is really easy to prepare and bake. So I thought that this method can be used also in savoury delicacies. Many of you know that my favorite ingredient is onion, and I enjoy it very much caramelized. The following recipe is an upside down tart with caramelized onions really easy and cheap to make .
350- 400 gr all purpose flour
200 gr cold butter grated
2 egg yolks
a pinch of salt (instead of sugar)
200 gr onions sliced
50 gr butter
1/2 cup brown sugar
50 gr vinegar
rosemary or thyme ( optional)
1. Preheat the oven and start making the pastry. Mix in the food processor all ingredients to create a smooth dough. Let the dough rest in the frigde for 15-30 minutes.
2. Put in a medium saucepan olive oil and butter, over high heat and when the butter is melted add the sliced onions. Stir and let it cook for 3-5 minutes. Add vinegar, sugar, salt and pepper, rosemary or thyme and lower the heat. Cover the saucepan and let it cook for 20 minutes. You may need to stir the onions from time to time.
3. When the onions are prepared, put them in a tart pan and let them cool. Remove the pastry from the frigde and roll it out and put it over the onions to cover them.
4. Bake the tart for 30-40 minutes in 180 C or unitl the crust is golden brown. Remove the tart from the oven and flip it over carefully. Enjoy it hot or cold with some green salad!