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Pulse 1 cup flour and the dates in the food processor until the dates are very finely copped; transwer to a large bowl.
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Stir in the remaining flour, zest, salt, pepper and baking powder. Make a well in the center.
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Pour oil and 2 beaten eggs into the well and stir until combined; knead briefly in the bowl until the dough comes together.
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Press the dough into a log and wrap snugly in parchment paper, squeezing tightly and twisting the ends in opposite directions to form a tight 9" log; chill until firm, 2-3 hours.
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Preheat the oven to 350 deg F.
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Trim off the ends and cut into 24 slices.
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Arrange on a large parchment paper-lined baking sheet, brush tops with 1 beaten egg and bake until golden brown, 20-25 minutes.
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Cool.
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These can be made up to three days ahead and stored in an airtight container.