The Ultimate Makeover Onion Tart Recipes

Steps:

• Slice the onions into small, thin, wedge-shaped pieces. Heat the rapeseed oil in a large, preferably non-stick, sauté or deep frying pan. Stir in the onions and fry over a medium heat for about 20 mins. Stir only occasionally so they can cook fairly undisturbed and caramelise underneath. When done, they should be well caramelised and sticky.
• Meanwhile, prepare the base. Heat oven to 190C/170C fan/gas 5 and put in a baking sheet. Put the flour and butter in a bowl with a pinch of salt and rub with your fingers until it resembles rough crumbs. Mix the yogurt and milk, pour it into the flour mixture and work together briefly with a knife until the dough just comes together. Remove from the bowl and gently press together to form a ball. Do not overwork the mixture.
• Roll dough out thinly on a lightly floured surface and use to line a 23cm round, fluted, loose-based flan tin, about 2.5cm depth, pressing it with your fingers into the flutes. Sit the tin on. If the dough is a little sticky, dust your fingers in some flour.
• Beat the eggs in a medium bowl, then stir in the crème fraîche, thyme, mustard and seasoning. Spoon and spread half of the onions into the lined base, season with pepper then scatter over half the cheese. Pour the egg mixture over the top, then scatter over the rest of the onions and cheese. Sit the tin on the hot baking sheet and bake for 25-30 mins until the base and filling are cooked. Remove and cool for about 10 mins, then remove from the tin and serve while fresh and warm.

Steps:

• Stir together yeast and warm water in a small bowl and let stand until foamy, about 5 minutes. (If mixture doesn't foam, start over with new yeast.)
• Put 1 1/2 cups flour in a medium bowl, then make a well in center of flour and add yeast mixture to well. Stir together egg, 1 tablespoon oil, and 1 1/2 teaspoons salt with a fork. Add egg mixture to yeast mixture and mix with a wooden spoon or your fingertips, gradually incorporating flour, until a soft dough forms. Transfer dough to a floured surface and knead, working in additional flour (up to 1/4 cup) as necessary, until smooth and elastic, about 5 minutes. Transfer dough to an oiled bowl and turn to coat. Cover with plastic wrap and let rise in a draft-free place at warm room temperature until doubled, 1 to 1 1/2 hours.
• While dough rises, heat remaining 1/3 cup oil in a 12-inch heavy skillet over medium-high heat until it shimmers, then sauté fennel seeds until a shade darker, about 30 seconds. Stir in onions, remaining teaspoon salt, and 1/2 teaspoon pepper, then reduce heat to medium-low and cover onions directly with a round of parchment paper. Cook, stirring occasionally, until onions are very tender and golden brown, 1 to 1 1/4 hours.
• Preheat oven to 375°F with rack in middle.
• Knead dough gently on a floured surface with floured hands to deflate. Pat out dough on a large heavy baking sheet (preferably blue steel) into a 15- by 12-inch rectangle, turning up or crimping edge, then brush mustard evenly over dough, leaving a 1/2-inch border around edge. Spread onions evenly over mustard, then sprinkle evenly with cheese.
• Bake tart until crust is golden brown, 30 to 35 minutes. Cut into 2-inch squares or diamonds and serve warm or at room temperature.

Steps:

• Blend flour and salt in the bowl of a food processor. Scatter butter over flour, top with lid and pulse 12 pulses to cut butter into flour to a coarse meal consistency.
• Dump butter-flour mixture into a medium stainless bowl. Make a well in the center and pour ice-cold water into the well.
• Using a flexible plastic dough scraper instead of your warm hands, bring the dough together by folding and pressing. Be firm and brisk and get the dough past its shaggy stage into a neat disk, trying to avoid using your hands or too much kneading. Refrigerate the dough for 30 minutes. Heat the oven to 375 degrees.
• Meanwhile, cut the onions in half and peel them. Slice the halves with the ribs (root end to sprout end direction), not against, to create julienne slices rather than half moons.
• In a wide sauté pan over medium-low heat, melt the bacon fat and slowly sweat the onions until they are caramelized. Take all the minutes you need - 25 or so - to let them soften to translucent, then to let the water they release start to evaporate, then to allow the sugars they contain to start to brown in the pan, so that you end up with soft, sweet and evenly browned onions. This is achieved by a slow caramelization. Set onions aside to cool.
• Roll tart dough out to a 1/4-inch-thick round, and drape over a round 10-inch fluted false-bottom tart pan. Lay dough into the pan, gently pressing into the bottom, and roll the pin across the pan to cut off the excess dough. Use your fingers to press the edges into the flutes, accentuating the shape of the dough edge. Dock the bottom of the dough with the tines of a fork, weight the pastry with beans or weight and blind-bake for 25 minutes.
• In a bowl, beat the egg with the cream. Stir in the caramelized onions. Season with pepper, nutmeg and salt to taste. Stir well, and make sure the onions are all evenly coated with the custard.
• Remove tart shell from oven, and slip it onto a baking sheet. Remove weights, fill with the onion-custard mixture and distribute it evenly. Return tart to oven on the sheet, and bake for 25 minutes, or until custard has set, the tops of the onions start to achieve a deeper brown and the dough is dark golden brown at the edges.
• Remove from the ring, and allow to cool just a few minutes on the rack, so that the piping hot tart shell can kind of tighten up enough to be sliced with a sharp chef's knife. (In the first few minutes straight out of the oven, the dough is kind of soft from the heat, possibly giving you the false impression that you have a soggy tart. Let it sit on the rack just to shake off this initial soft stage and to recrisp and refirm, which it will.) Cut into wedges, and serve while hot.

Steps:

• Line unpricked pastry shell with a double thickness of heavy-duty foil. Bake at 450° for 8 minutes. Remove foil; bake 5 minutes longer. Cool on a wire rack. , In a small skillet, saute onions in oil until tender; cool. In a food processor, combine the eggs, feta cheese, salt, pepper, nutmeg and hot pepper sauce; cover and process until smooth. Gradually add cream and milk; process until blended., Brush the inside of crust with mustard. Sprinkle the green onions, chives and sauteed onions over crust. Carefully pour egg mixture over onions. Top with Parmesan cheese. , Bake at 375° for 30-40 minutes or until a knife inserted in the center comes out clean.

Steps:

• To make the pastry, process the flour, butter and water together in a food processor for a few minutes until a rough dough forms. Remove, wrap in plastic wrap and refrigerate for 30 minutes.
• Preheat the oven to 180°C (350°F/Gas 4).
• Roll the dough out on a floured bench and gently press into the tin. Trim the pastry to fit and reserve the left-over pastry to patch any cracks.
• To blind-bake the tart, line the pastry shell with foil and fill with baking weights or uncooked rice or beans. Bake until cooked, about 20 minutes. Remove the foil and weights and bake for an additional 15-20 minutes until lightly golden. If there are any cracks, patch with the left- over pastry.
• While the tart shell is baking, prepare the filling.
• In a large frying pan over low to medium heat, sauté the onion in the oil until very soft and light brown. This may take up to an hour. Set aside to cool slightly. Beat the egg yolks with the cream. Add the nutmeg and season well with salt and pepper. Stir the onion through the cream mixture.
• Carefully fill the pastry shell with the filling, place in the oven and bake for 40-45 minutes, or until the filling is set. Serve warm or at room temperature.

Steps:

• Heat oven to 375 degrees.
• Put olive oil in a wide skillet or heavy-bottomed pot over medium-high heat. When oil is wavy, add onions and cook, stirring, until softened and lightly browned, about 5 to 7 minutes. Season well with salt and pepper.
• Add leeks, garlic and thyme, and cook for another 5 minutes, until leeks are softened but still bright green. Taste and adjust seasoning, then spread mixture on a baking sheet to cool to room temperature.
• Lay pastry round on a rimmed parchment-lined baking sheet. Spread cooled onion mixture over pastry, leaving a 1-inch border. Fold over the border and crimp.
• Sprinkle capers evenly over onion mixture. Arrange anchovy fillets on top.
• Bake for 45 minutes, until the pastry is nicely browned. Cool tart for 5 minutes, then sprinkle the chives on top and cut into wedges to serve.