To make sugar-free butter cookies, mix 1 3/4 cups of unsalted butter with 1 1/4 cups of stevia and two large eggs. Mix in 1 teaspoon of vanilla extract, 1/4 teaspoon of ground cinnamon, 3 1/2 cups of all-purpose flour and 3/4 teaspoon of salt. Bake at 350 degrees Fahrenheit.
Before you mix the butter, run the flour and salt through a sifter and into a bowl, and set it aside. Begin mixing the butter by mixing it alone on a medium-to-high setting, and continue mixing until it reaches a fluffy consistency. Add each egg one at a time. Switch the speed to low before you add the vanilla extract and cinnamon, and add the flour mixture gradually.
Once the mixture is blended to a smooth consistency, separate it into quarters, and flatten the quarters with a rolling pin. Refrigerate the dough for two and a half hours. Flatten the quarters until they are 1/4 to 1/8 of an inch thick, and separate them using your desired cookie cutters. Place the uncooked cookies on a baking sheet 1 1/2 inches apart, and bake until they're golden brown.
Stevia, a natural sweetener, can be used to substitute sugar in almost any recipe, as can sucralose-based artificial sweeteners. Pure stevia does not need to be used. You can use name-brand products that process stevia into a white powder as well.