In a medium-sized bowl, gently whisk together your whole wheat pastry flour, cinnamon, ginger, baking soda, and salt. This ensures all the cozy spices are perfectly distributed!
Grab a larger bowl and an electric mixer. Beat the softened butter until it’s wonderfully light and fluffy. Gradually add your erythritol or sweetener blend, creaming them together until the mixture is smooth and beautifully blended. Now, beat in the egg and vanilla extract until everything is fully combined and looks creamy.
Slowly, add your dry flour mixture into the wet ingredients. Mix on a low speed just until everything comes together into a soft dough. Be careful not to overmix; we want a tender cookie!
Shape the dough into a flat disk, wrap it snugly in plastic wrap, and pop it into the fridge for about 15-20 minutes. This quick chill makes the dough much easier to roll out.
While your dough is chilling, preheat your oven to 350°F (175°C). Lightly flour a clean counter or a silicone mat. Roll out your chilled dough to about ¼-inch thickness. Use your favorite festive cookie cutters (stars, trees, bells!) to create shapes. Carefully transfer these lovely cutouts to a baking sheet lined with parchment paper.
Bake for 8-10 minutes, or until the edges are just lightly golden. Watch them closely so they don't get too brown. Let the cookies cool on the baking sheet for a few minutes before gently moving them to a wire rack to cool completely.
If you wish, dust the cooled cookies with a tiny bit of erythritol powder or sprinkle a sparse amount of natural festive sprinkles for a touch of holiday sparkle without extra sugar.