Preheat the oven to 400°F and line the baking sheet with a piece of parchment paper.
In a large bowl, cream the vegan butter and sugars until light and fluffy.
Beat in the egg replacer and vanilla extract until well-blended.
Stir in the baking powder and salt. Next, stir in the flour, 1 cup at a time, until well combined.
Refrigerate the vegan sugar cookie dough for 30 minutes.
Roll out the dough to 1/4 inch thick on a floured surface. Cut it into your desired shapes.
Arrange them on the prepared baking sheet. Freeze for 10 minutes.
Transfer to the oven and bake for 10 minutes.
Cool for 5 minutes, then transfer to a wire rack to cool completely before decorating.
Notes
Chill the dough for at least 30 minutes before rolling it out, or it will be too soft and sticky to work with.
Place the baking sheet of cut-out sugar cookies in the freezer before baking, or they’ll puff up too much and lose their perfect shapes.
Keep your vegan sugar cookies soft and chewy by storing them in an airtight container at room temperature for up to 3 days. You can put a small piece of bread in the container with the cookies to keep them softer for longer!