Ingredients
Equipment
Method
- In a medium bowl, whisk together 2¼ cups (270g) all-purpose flour, ½ tsp (2g) baking powder, ¼ tsp (1g) cream of tartar, and ½ tsp (3g) fine sea salt until fully uniform with no streaks, approximately 20 strokes — set aside.
- In the bowl of a stand mixer fitted with the paddle attachment (or a large bowl with a hand mixer), beat ½ cup (113g) softened unsalted butter and 1 cup (192g) granulated erythritol on medium speed for 3 minutes, scrape down the bowl completely, then beat for 1 more minute until the mixture is pale, slightly fluffy, and cohesive.
- With the mixer on low, add 1 large room-temperature egg and 1½ tsp (7.5ml) pure vanilla extract, increase to medium speed, and beat for 1 minute until fully incorporated and smooth — scrape down the bowl again before proceeding.
- With the mixer on the lowest speed, add the dry ingredient mixture in two additions, mixing only until no dry flour streaks remain — approximately 20 to 30 seconds total — then stop the mixer immediately.
- Turn the dough out onto a clean surface, divide into two equal portions, flatten each into a ¾ inch (2cm) disc, wrap tightly in plastic wrap, and refrigerate for a minimum of 1 hour — 2 hours is better.
- Position the oven rack in the middle position and heat to 325°F (163°C) — allow at least 15 minutes of full preheat before baking — then line a light-colored aluminum baking sheet with parchment paper.
- Remove one dough disc from the refrigerator and roll between two sheets of parchment paper to exactly ¼ inch (6mm) thickness, cut shapes with cookie cutters pressing straight down without twisting, and transfer to the prepared baking sheet spaced 1½ inches (4cm) apart — if desired, sprinkle lightly with granulated erythritol before baking.
- Bake on the middle rack at 325°F (163°C) for 10 to 12 minutes, pulling the pan the moment the edges look set and the surface looks matte and dry — do not wait for browning or for the centers to look fully done.
- Leave cookies on the hot pan for exactly 5 minutes, then transfer to a wire cooling rack and cool completely for at least 20 minutes before stacking, storing, or eating — repeat with the second dough disc.
Notes
- Erythritol: use fine-crystal brands like Swerve Granular or Anthony's — coarse erythritol produces surface grittiness in finished cookies.
- Butter: must be 65–68°F — too warm causes spreading, too cold prevents proper creaming with erythritol.
- Flour: weigh at 270g — volume measuring packs the flour and adds 20–30% more than needed.
- Cream of tartar: not optional — it rounds out erythritol's flat sweetness and controls spread.
- Chilling: minimum 1 hour, 2 hours preferred — skipping causes spreading and loss of shape definition.
- Storage: airtight rigid container, room temperature, up to 4 days — do not refrigerate.
- Freeze baked: flash-freeze in a single layer 1 hour, then airtight container with parchment between layers, up to 2 months.
- Freeze unbaked dough: wrap in plastic then foil, freeze up to 3 months — thaw overnight in fridge, roll cold.
- Make ahead: dough keeps refrigerated up to 3 days — overnight chill produces the cleanest cut edges.
- Scaling: this recipe doubles reliably — do not scale leavening linearly beyond a double batch.
- Altitude: above 3,500ft reduce baking powder to ⅜ tsp and add 1 tbsp (8g) extra flour — check at 9 minutes.
- Allergens: contains gluten and dairy and eggs — naturally free of nuts, soy, and refined sugar.
- Tip: cool cookies fully for 40 minutes before tasting — erythritol's cooling effect fades significantly and vanilla flavor comes forward at full room temperature.