Lesson of the day: Pie crust is HARD!!! It is so deceptive with only 4 ingredients but you have to add and mix them perfectly to get the ideal crust. First, it’s using butter and water at a certain temperature, then you add water…and who knows how much since I think I saw recipes that called for anywhere from 2-6 tbsps lol. The crazy thing is, the amount of water is probably the most critical ingredient of it all! In my recipe, I said to add 3-5 tbsp. In the grand scheme of things, this is a big difference (I know) but it really depends on a lot of external factors such as temperature and humidity and…okay I sound like a weather-girl now. Bottom line – practice makes perfect!
This onion tart is delicious. My husband and I are pretty much obsessed with onions. We put them on everything. And if something has caramelized onions in it, WE’RE IN! We don’t care what it is. Naturally, when I saw this idea in Cooking Light a while back, I decided to make it my own and even try my hand at homemade crust since the original called for store-bought pie crust…which isn’t such a bad idea considering my tirade above. My husband described this as “eating dessert for dinner”. Well…obviously this isn’t dessert but I can understand where he’s coming from with the buttery crust and sweet onions. I guess it just goes to show you how versatile pie crust can be…once you figure out how to not mess it up :)
Sweet Onion Tart
1c all-purpose flour
½ tsp salt
6 tbsp chilled butter
3-5 tbsp ice cold water
2 tbsp extra-virgin olive oil
3 large onions, thinly sliced
1 tsp salt
½ tsp black pepper
4 oz chopped pancetta
4 thyme sprigs
½ c shredded Gruyere cheese
For the crust: Place the flour and salt in the bowl of a food processor and pulse a few times just to mix. Cut butter into small pieces and add to flour mixture. Pulse until large crumbs form (10-15 pulses). Add water 1 tbsp at a time, pulsing between each addition, until the mixture sticks together when pressed and is no longer sticking to the side of the bowl. Empty onto plastic wrap and gather to form a ball. Press dough into a round disk, wrap in the plastic wrap, and store in the refrigerator for 30 mins to 1 hour.
Tip: Store butter in the refrigerator and place in the freezer for 15 minutes prior to cutting into small pieces. Also, I used a fork and knife instead of my fingers when cutting, to prevent any body heat from melting the butter.
Preheat oven to 375.
Add 2 tbsp olive oil to a large sauté pan set at medium-high heat. Add onions, salt, pepper and stir to combine. Once the onions soften, lower heat to medium-low and cook until browned and caramelized (20-30 mins). Add leaves of thyme sprigs to onion mixture just before the onions are fully cooked.
While onions are browning, cook pancetta in a small skillet until brown and crisp (8-10 mins). Empty pancetta onto a plate lined with paper towel to drain grease and set aside.
Remove dough from refrigerator and roll out into a 10-11” disk on a floured surface. Carefully move dough to a non-stick baking sheet (or baking sheet lined with parchment paper) and pierce dough a few times with a fork to allow steam to escape.
Tip: Loosely wrap dough around the rolling pin to move it from one place to another.
Top dough with onions, pancetta, and cheese – leaving about 1” of the outer rim uncovered. Fold over outer rim of dough onto the filling. Place baking sheet in oven and cook at 375 for 30-35 mins or until both cheese and crust have browned. Allow to cool for a few minutes before slicing. Garnish with thyme.
You can serve this with a salad or some other veggie for dinner or as an appetizer or hors d’oeuvre for a party. Happy crust making!