In a food processor, combine the flour, ground almonds, sugar, baking powder, and salt. Add the butter and pulse until the mixture has the texture of sand. Add the egg. Pulse again until the dough is moistened but still grainy. Press the dough onto the bottom of a 23-cm (9-inch) pie plate with a removable bottom. Bake for 20 to 25 minutes or until the crust is golden brown. Cool completely.
Filling
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