In a large bowl, combine 2 1/2 cups all-purpose flour, 1 tablespoon granulated sugar, and 1 teaspoon kosher salt. Whisk to combine.
Slice 1 cup Land O Lakes® Unsalted Butter into 1-inch cubes and add to the dry ingredients. Use a dough blender to rub the butter into the dry ingredients until the mixture resembles a coarse cornmeal, with no butter chunks larger than the size of your thumbnail. In a liquid measuring cup, combine 6 tablespoons water, 2 teaspoons apple cider vinegar, and 1/2 cup ice, whisking to combine until the mixture is cold. Drizzle 6 tablespoons of the mixture over the dry ingredients and use a rubber spatula to mix the liquid into the dry ingredients. To test if the mixture is going to come together, eyeball and pick up a tablespoon's worth of the mixture and squeeze it in your hands — if it sticks together, your dough has enough liquid. If it still feels super dry and crumbles easily, you'll need to add another tablespoon of the water mixture to the dry ingredients.
Use your hands to knead the mixture into a rough ball. Divide the ball into two even halves, and mold each into a flat disc. Cover in plastic wrap and refrigerate for at least an hour, preferably overnight, before following the instructions above to roll out the pie and weave a lattice.