Instructions
- To prepare the crust: whip the egg and an egg yolk with sugar. Add flour, baking powder, and lemon zest. Cold cold butter
into small cubes and also add to the mixture. Mix and knead until just combined with the help of a utensil. Finished dough
should have lumps of butter in it. Butter will make the crust flaky.
- Wrap in plastic wrap and refrigerate for 1 hour.
- To make the filling: peel and core apples. Grate on the largest side of a box vegetable grater and place in a deep frying
pan. Add sugar, zest, and lemon juice and cook on medium until all juice evaporates (about 30 minutes). Set aside to cool.
- When ready to bake, preheat the oven to 400°F / 200°C.
- Grease the bottom and sides of a 9 x 9 inch / 23 x 23 centimeter baking dish with butter (or line with parchment paper).
- Cut the dough in half, place between two pieces of parchment paper and roll out to fit your baking dish. Make sure there is
enough dough to cover the sides as well. Distribute evenly on the bottom and all the way up the sides. Scoop the cool filling
onto the bottom of the crust. Roll out the remaining half of the dough and place on top of the filling.
- Whisk the egg white and a teaspoon of water with a fork, and brush onto the top of the crust.
- Bake for 45-50 minutes or until crust is golden brown.
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