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for the dough:.
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Combine flour, salt, sugar and baking powder in a bowl.
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3
Cut chilled shortening into bits andf cut into dough until it forms pea-sized clumps.
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4
Combine the water, egg, and vinegar in a measuring cup.
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5
Stir into flour mixture lightly with a fork, tossing to combine.
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6
Gather dough into four balls, flatten into discs and wrap in plastic wrap.
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7
Place in freezer while preparing filling.
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8
Preheat oven to 425 degrees.
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9
Melt butter in a saucepan.
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Saute onion over medium-low heat until fragrant and translucent.
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Combine with the rest of filling ingredients in a large bowl.
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Unroll chilled dough one portion at a time on a lightly floured surface.
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Roll flat into a 9x11 inch rectangle.
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Cut in half width-wise.
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Take a handful of filling (about 1/3-1/2 cup) and place it on one end of each rectangle, leaving a half-inch border on all sides.
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16
Fold dough over and pinch seams, wetting if necessary to seal.
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17
Crimp edges with forks.
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place on parchment-lined baking sheets that have also been sprayed with cooking spray.
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Brush top of dough with eggwhites (optional, but makes the crust flakey and shiny) Place in oven.
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Cook for 12 minutes at 425 degrees, then reduce temp to 375 degrees, then continue to bake for 10-15 minutes, or until dough is lightly brown on top.
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21
Remove from oven, cool on cookie sheets for 5 minutes, then transfer to plates.
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22
Serve with Tzatziki sauce, or even marinara (whatever suites you!
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23
).