Keto Sugar Cookies

Why sifting the flour changes everything

This recipe uses a blend of almond flour and coconut flour. I’ve tested using each one alone, and the blend is what works. Almond flour alone makes the cookies too dense. Coconut flour alone absorbs too much moisture and the dough cracks.

You need to sift the flours

When making a delicate cookie like this, I sift the almond and coconut flours together before adding them to the wet ingredients. This one step changes the entire texture of the finished cookie. You get that almost flaky interior instead of a gritty, heavy crumb. I think it also helps the flavors meld together.

Any sifter will work. Sometimes the almond flour clogs up the mesh. Just give it a good whack against the bowl and it starts moving again. I’ve had readers ask if they can use a blender instead, and you can, but the sifter gives you a lighter result because it aerates the flour rather than just grinding it finer.

Why you need to refrigerate the dough

Refrigerating the dough is the step that determines whether your keto cut out cookies hold their shape or spread into blobs. I refrigerate for a minimum of 2 hours. Sometimes I make the dough the night before and let it sit overnight.

The cold dough is firmer, which means it rolls out evenly and the cookie cutter punches clean shapes. It also makes transferring those shapes to the baking sheet much easier. I used to skip this step when I was in a rush and the cookies spread every single time.

Here’s what I do: after I punch out all my shapes, I put the baking sheet back in the fridge for another 10-15 minutes before it goes in the oven. If the dough gets too warm, it will lose its shape when it bakes. This second chill is what keeps your stars looking like stars and your hearts looking like hearts.

Refrigerating also helps the flavors come together. The butter, sweetener, and extracts have time to fully absorb into the flour blend.

How to fix cookies that spread after baking

Even with the refrigerator trick, sometimes a batch spreads a little. I’ve had this happen when my oven runs hot or when I rolled the dough too thin on one side. Here’s my fix.

As soon as the cookies come out of the oven, use a butter knife or chopstick to push the edges back into shape. The cookies are still warm and pliable enough to reshape. I do this within the first 30 seconds of pulling the tray out. Then I let them cool completely on the baking sheet before moving them anywhere.

These low carb sugar cookies are very delicate when they first come out of the oven. They need to cool completely before you pick them up. If you try to move them too early, they’ll crack or crumble. Give them at least 10 minutes on the tray, then transfer to a wire rack. Once they’re fully cooled, they’re sturdy enough to frost and handle.

Keto royal icing (two consistencies)

I make two batches of icing from the same base recipe, one thick and one thin. The thicker icing gets an extra 1/4 cup of powdered erythritol, and I use it to pipe a border around each cookie. The thinner icing floods the inside.

I zigzag the thin icing back and forth inside the border, then use a toothpick to pop any air bubbles and smooth it out. The border acts like a dam that keeps the flood icing from running off the edges.

I use piping bags for both consistencies. Ziploc bags work in a pinch (just snip a tiny corner), but real piping bags give you more control on the border lines. You can add food coloring to either batch for different colors. I usually do white borders with colored flood icing inside.

One thing I’ve learned: erythritol is the sweetener that works for this icing. I’ve tried allulose and monk fruit blends, and neither sets up with the right consistency. Allulose keeps cookies soft and chewy (great for something like my oatmeal cream pies, not right here). Erythritol dries firm and slightly crisp, which is exactly what you want for decorating.

How to store and freeze the dough and baked cookies

I store unfrosted cookies at room temperature in an airtight container for up to a week. Once frosted, they last about 5 days at room temp (the icing stays firm).

The raw dough freezes beautifully. I flatten it into a disc, wrap it in plastic wrap, slide it into a freezer bag, and it keeps for up to 3 months. When I’m ready to bake, I move it to the fridge overnight to thaw, then roll and cut as usual.

I also freeze baked, unfrosted cookies between layers of parchment paper in a freezer container. They thaw at room temperature in about 20 minutes and taste just as good as fresh. This is how I get ahead for holidays. I’ll bake a triple batch over a weekend and freeze them all, then pull out a dozen at a time for decorating with the kids.