Leftover egg yolk tart

Okay, this is a leftover smashing meal. Good luck!
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Ingredients
  

For the pastry

  • 125 grams plain flour + more for rolling out
  • 65 grams unsalted butter

OR

  • 35 + 30 grams lard/unsalted butter, respectively
  • pinch salt

For the leftover egg yolk filling

  • 1-2 leftover egg yolks
  • 1-2 whole eggs
  • 150 ml cream (double or single)
  • 1 onion add in another one or two if not using bacon
  • 100 grams bacon (optional) you could use mushrooms instead
  • 150 grams cheese - cheddar, Gruyere, double Gloucester.... just a melting cheese, it doesn't really matter which one
  • optional: 1 parmesan rind
  • optional: bay leaf, nutmeg
  • Salt & pepper

Tools

  • Scales and mixing bowl
  • Food processor or mixing bowl
  • Chopping board and knife
  • Bowl & cover for pastry
  • Measuring jug
  • Rolling pin
  • Pie dish, ceramic or metal
  • Cheesegrater
  • Baking beans
  • Greaseproof paper
  • Fork
  • Optional saucepan

Instructions
 

If using bay, parmesan rind ....

  • Place the cream, flavourings and seasoning in a saucepan. Turn the heat to medium. After 5 minutes, turn the heat off and leave them to one side for up to a day.

If making your own pastry, processor method

  • Place flour, salt & butter in the processor. When they look like sand, add a little water and process. Turn out onto a floured surface and squish together. 

If making your own pastry by hand

  • Cut the butter/butter and lard into cubes. Rub the fat into the seasoned flour until it looks like sand.

Both methods

  • Add just enough water to make it come together. This means that, when you squish it about, it doesn't crack and crumble.
  • Place in the bowl, cover and leave for at least 30 minutes in the fridge.

Make the filling

  • If you're using bacon, cut the fat off and put it in the pan to render. This will give the whole mixture the flavour of bacon.
  • Dice or slice the onion. Put the pan on around medium heat. Add the onions and DON'T LET THEM BROWN. 
  • It'll take at least 15 minutes for the onions to squidge down. Make sure you cannot see any white. 
  • Fry the bacon in with the onions. Grate the cheese.
  • If you've seasoned the cream with parmesan rind and bay, strain the cream into a bowl. Beat the egg yolks and whole egg into the cream. Stir in the cheese.

Bake the pastry

  • Turn the oven to 220C. Place a tray in the oven to heat. 
  • When the pastry is golden and lovely, turn the heat down to 180C. Remove the
  • Flour your counter (if you've been tidy enough to clean it since making the pastry). Take the pastry from the fridge and roll it out. Place it into the tin/dish. Prick it all over with the fork. Place the greaseproof paper over the pastry, cover it with pastry weights..
  • Place the quiche onto the hot tray and bake for about 15 minutes, or until golden brown.
  • Meanwhile, mix the onions, bacon and cheese custard mixture. Taste and season further if needed.
  • When the pastry is cooked, carefully remove the hot baking beans and leave them to cool. 
  • Pour the custard into the hot pastry case and return to the oven. Bake for around 30 minutes or until set.

Storage

  • The tart will keep in the fridge for around 5 days. If you want to reheat, it's best to let the tart come to room temperature and then place in a warm oven until warm through. Don't reheat again. And don't microwave! The pastry will go all floppy and foul.