French onion tart

French onion tart

1-hour 20-Minuterecipe Serves 8
Our french onion tart is perfect for holiday brunch – you can pre-bake the shell, grate cheese and chop onions all in advance.
1-hour 20-Minuterecipe Serves 8

Ingredients

2 cups
All Purpose Flour
1/2 tsp
Table Salt
171 g
Unsalted butter
2 ozs
Ice water
1 tsp
White vinegar

Directions

Prep: 20-minute | Cook: 1-hour
  • 1

    Whirl flour with salt in a food processor. Add butter and pulse until coarse crumbs form. Gradually add ice water and vinegar, pulsing after each addition. Pulse just until dough starts to come together. Gather into a ball, then press into a disc. Wrap in plastic wrap. Refrigerate at least 45 min or up to 3 days. Heat a large non-stick frying pan over medium. Add oil, then onion and shallots. Cook, without stirring, for 5 min. Reduce heat to medium-low. Add salt and sugar. Season with fresh pepper. Cook, stirring often, until onions turn deep brown, 6 to 12 more min. Set aside. Whisk eggs with cream and milk in a medium bowl until smooth. Set aside. Preheat oven to 400 F. Lay an 11-in. fluted tart pan on a baking sheet. Roll dough on a lightly floured surface into a 13-in. circle, about 1/4 in. thick. Carefully lift dough into tart pan. Gently press dough into the corners and up the edges of the pan. Trim and discard excess. Prick the dough with a fork about 15 times. Lay a foot-long piece of parchment paper on the shell and fill with 2 cups dry beans or pie weights. Bake in centre of oven for 15 min, then cover with foil. Continue baking until shell is just golden, about 15 more min. Remove to a rack. Reduce heat to 350 F. Lift out parchment and beans. Reserve beans for future use. Sprinkle half of cheese, then onion mixture over warm crust. Add egg mixture. Sprinkle with remaining cheese, then thyme. Bake in centre of oven until top is firm, 20 to 22 min. Transfer to a rack. Let tart rest 10 min before serving.

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Last updated: August 28th, 2020

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