Onion French tart -

Put flour, salt and sugar into your food processor and pulse to mix them together.
Add butter cut in small cubes and pulse a few seconds until the mixture is crumbled.
While pulsing add water and pulse a couple of times more until the dough becomes one.
Transfer the dough to a floured surface (or even a big bowl9 and form a ball. Cover with plastic wrap and put in the fridge for 1 hour.
Preheat the oven 200°C/400°F.
Roll the dough on a floured surface forming a rectangle of about 10 x 14 in. Use a pizza cutter to trim the edges.
Cover an oven flat pan with parchment paper and set the dough there. Put into the fridge while you prepare the onions.
Peel the onions and cut them in half lengthwise. Take each half and put it on a cutter with the cut part facing down. Cut the half onion in thin slices keeping them entire.
Take the dough and spread the cheese all over it, including the borders.
Spread thyme and chives.
Place the onion slices, lightly overlapping them, creating a diagonal design.
Brush them with cream, spread some butter chunks here and there and salt.
Bake for 40 min or until it is golden. Cover the borders with foil if they should become too brown (I never did that).
Let it cool a bit before cutting it in squares or slices.
Serve warm or at room temperature.

Onion French tart