Plum Crostata

1 cup flour1 cup almond meal1/2 cup powdered sugar5 oz butter, cold and cut in small pieces1 tablespoon vanilla extract.1 egg white12 plums, halved, pitted and quartered1/4 cup water1/2 cup sugarzest and juice 1 lemon Process the 4 first ingredients until a sandy mixture forms. Add vanilla and egg white to form a dough. Cover …