Zero Sugar Shortbread Cookies: Buttery & Low-Carb

Updated November 5, 2026

Total time
27 min
prep 15 min · cook 12 min
Serves
24
portions as written

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Zero Sugar Shortbread Cookies: Buttery & Low-Carb

These zero sugar shortbread cookies deliver the same tender, buttery crumble as the classic Scottish treat, but without a single grain of refined sugar. Using a blend of almond flour and a sugar-free sweetener, they bake up golden at the edges with a melt-in-your-mouth texture that rivals the original. Perfect for low-carb, keto, or diabetic-friendly diets, these cookies prove you don’t need sugar to enjoy a truly satisfying sweet.

Ingredients

  • 1 cup (226 g) unsalted butter, softened
  • 1/2 cup (100 g) granulated erythritol or monk fruit sweetener (see Tips)
  • 1 teaspoon vanilla extract
  • 2 cups (200 g) almond flour
  • 1/4 cup (30 g) coconut flour
  • 1/4 teaspoon salt

Instructions

  1. Preheat your oven to 325°F (163°C). Line two baking sheets with parchment paper.
  2. In a large bowl, beat the softened butter and sweetener together with an electric mixer until light and fluffy, about 2 minutes. Scrape down the sides as needed.
  3. Add the vanilla extract and beat until combined.
  4. In a separate bowl, whisk together the almond flour, coconut flour, and salt. Gradually add the dry ingredients to the butter mixture, mixing on low speed until a soft dough forms. The dough will be slightly crumbly but should hold together when pressed.
  5. Turn the dough out onto a lightly floured surface (use almond flour) and shape it into a disk. Roll it out to about 1/4-inch (6 mm) thickness. If the dough cracks, let it sit for a few minutes to warm slightly, then press it back together.
  6. Use a cookie cutter to cut out shapes, or slice into rectangles with a knife. Place the cookies about 1 inch (2.5 cm) apart on the prepared baking sheets.
  7. Bake for 12–14 minutes, until the edges are just starting to turn golden. The centers will still look slightly soft—that’s okay.
  8. Remove from the oven and let the cookies cool on the baking sheet for 5 minutes. They will firm up as they cool. Then transfer to a wire rack to cool completely.

Tips

  • Sweetener choice: Use a granulated sweetener that measures like sugar, such as erythritol or monk fruit blend. Powdered erythritol (often called confectioners-style) works even better for a smoother texture. Avoid liquid sweeteners, as they add too much moisture.
  • Don’t overmix: Overworking the dough can make the cookies tough. Mix just until the flours are incorporated and the dough comes together.
  • Chill if needed: If your kitchen is warm and the dough feels too soft, refrigerate it for 15–20 minutes before rolling. This prevents spreading.
  • Storage: These cookies keep well in an airtight container at room temperature for up to 5 days, or in the refrigerator for a week. They also freeze beautifully for up to 3 months.

Serving Suggestions

Serve these shortbread cookies alongside a cup of tea or coffee for a classic afternoon treat. They’re also lovely crumbled over sugar-free vanilla ice cream or used as a base for a low-carb cheesecake crust. For a festive touch, dust them with a little powdered erythritol before serving.

Variations

  • Chocolate Dip: Melt sugar-free dark chocolate and dip half of each cooled cookie. Let set on parchment paper.
  • Citrus Zest: Add 1 teaspoon of lemon or orange zest along with the vanilla for a bright, aromatic twist.
  • Spiced Shortbread: Add 1/2 teaspoon of ground cinnamon or cardamom to the dry ingredients for a warm, cozy flavor.
  • Nutty Crunch: Fold in 1/4 cup (30 g) of chopped pecans or walnuts for extra texture.

Storage and Reheating

Store the cookies in an airtight container at room temperature for up to 5 days. For longer storage, refrigerate for up to 1 week or freeze for up to 3 months—separate layers with parchment paper to prevent sticking. To refresh, warm them in a 300°F (150°C) oven for 3–5 minutes; they’ll crisp up nicely. Avoid microwaving, as it can make them soggy.

Frequently Asked Questions

Can I use only almond flour instead of coconut flour? Yes, but the texture will be slightly more delicate and crumbly. Replace the coconut flour with an equal amount of almond flour, but note that the dough may spread a bit more. You may need to add a tablespoon of additional almond flour if the dough is too sticky.

Why did my cookies spread too much? Spreading usually happens if the butter is too soft or the dough was not chilled. Make sure your butter is softened but still cool to the touch, and chill the dough for 15–20 minutes if your kitchen is warm.

Can I use butter instead of margarine? Yes, butter is actually preferred for its flavor and texture. Margarine can work, but it may change the flavor and produce a slightly softer cookie.

Are these cookies truly zero sugar? Yes, the recipe uses no sugar or sugar-containing ingredients. Almond flour, coconut flour, and butter contain negligible sugar. Always check your sweetener’s label to ensure it has no added sugar.

Can I make these vegan? Yes, substitute the butter with a high-quality vegan butter that contains at least 80% fat. The cookies will be slightly less tender but still delicious.

How do I know when they’re done? The edges should be lightly golden, and the centers should look set but still soft. They will firm up as they cool, so don’t overbake—overbaking will make them dry.

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