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In a food processor with a steel blade place flour, butter, powdered sugar, vanilla and salt and blend until a crumbly mixture is obtained.
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Add egg yolk and continue to blend just until large chunks of dough form. If the dough does not come together into large chunks - gradually add a little water.
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Transfer the chunks of dough to a lightly floured work surface, combine with your hands and form a disc shape.
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Wrap in plastic wrap and refrigerate for about an hour.
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On a floured surface, roll the dough about 3-4 mm thick and line the baking pan. It is important to make sure that a 90 degrees angle is created between the sides and the base of the tart, which will ensure that the edges remain high.
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Prick the base of the crust with a fork.
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Freeze the crust for about an hour.