In a food processor add the sugar, salt, oil, egg and yolk, pulse just to combine, add the flour, zest and baking powder pulse to combine, add 2-3 tablespoons of water 1 tablespoon at a time until the dough starts to come together.
Move the dough to a lightly floured flat surface and gently knead to form a smooth compact dough that doesn't stick to your hands. Wrap in plastic wrap and refrigerate one hour before using.
Notes
If the dough is too sticky then add a bit more flour, a tablespoon at a time to bring it together.If you find that the dough is too dry, add 1-2 Tablespoons more water or oil or a mixture. If you are having trouble when using a rolling pin with the olive oil pie dough, place it between two sheets of wax paper. This oil pie crust can be used in any recipe that calls for pie crust! I love to use it in both sweet and savory recipes. Just remember to omit the sugar for a savory pie.Store the pie dough covered in plastic wrap for up to 3 days in the refrigerator. You can also freeze unbaked oil pie crust for up to 4 months.I like to roll out the unbaked pie crust and fit it onto a pie plate. Once frozen, lay a piece of wax paper on the top and wrap in plastic wrap. Store frozen for up to 4 months. When ready to use the pie crust, you will need to parbake it first. Crimp foil around the edges and prick bottom of crust or add pie weights and bake crust until golden before filling and proceeding with your pie recipe.