To prepare a simple vegan sugar cookies recipe, first you need to prepare your ingredients. First, you'll need your flour, baking powder, sugar, salt, and vanilla extract. Then, add your dry ingredients to the wet ingredients and mix them together until they're combined. Now, it's time to make the cookies. Using an electric mixer, beat the mixture on medium-high speed until the sugar is completely incorporated into the flour mixture. You don't want to over beat it, as this will cause your cookies to be too soft and chewy. Finally, pour the batter into your greased cookie sheet and bake them for 10 to 12 minutes, or until you can easily remove them from the oven.