These gluten free classic shortbread cookies are everything you want shortbread to be. Buttery, crumbly, and they practically melt in your mouth.

If you’ve been missing real shortbread since going gluten free, this recipe is going to make you really happy. They taste just like the traditional version, and nobody will be able to tell the difference.

The recipe is super simple and uses basic pantry ingredients. Butter, powdered sugar, gluten free flour, and a few other things you probably already have at home.

There’s no complicated technique here either. You mix the dough, shape it into a log, chill it, slice, and bake. That’s the whole process.

They come out with lightly golden edges and a soft, sandy texture that firms up as they cool. A little sprinkle of flaky sea salt on top makes them feel extra special without any extra effort.

Why You’ll Love This Recipe

Only 6 Simple Ingredients – These gluten free shortbread cookies use just six basic ingredients that you can find at any grocery store. No weird or hard to find stuff, just butter, powdered sugar, vanilla, gluten free flour, cornstarch, and salt.

Perfectly Buttery and Crumbly – Thanks to the combination of a full cup of butter and cornstarch, these cookies have that classic melt-in-your-mouth shortbread texture that crumbles just right with every bite.

No One Will Know They’re Gluten Free – Shortbread is one of those cookies where the gluten free version tastes identical to the original. The buttery richness does all the heavy lifting here, so no one at the table will be able to tell the difference.

Make the Dough Ahead of Time – The dough log can hang out in your fridge for a couple of days or even be frozen for later. So you can prep it now and bake fresh warm cookies whenever the craving hits.

Ingredients

1 cup Unsalted Butter, softened
1/2 cup Powdered Sugar
1 tsp Vanilla Extract
2 cups Gluten Free 1-to-1 Baking Flour
1/4 cup Cornstarch
1/4 tsp Salt
Flaky Sea Salt for topping

How to Make

Step 1

Beat softened butter and powdered sugar together in a large bowl until light and creamy, about 3 minutes. Add vanilla extract and mix to combine.

Step 2

Whisk together gluten free flour, cornstarch, and salt. Add the dry ingredients to the butter mixture and stir until a smooth dough forms.

Step 3

Turn dough out onto a sheet of plastic wrap. Shape into a log about 2 inches in diameter, wrap tightly, and refrigerate for at least 1 hour until firm.

Step 4

Preheat oven to 325F and line a baking sheet with parchment paper. Slice the dough log into 1/4-inch thick rounds and place on the baking sheet 1 inch apart. Sprinkle each cookie with a tiny pinch of flaky sea salt.

Step 5

Bake for 14 to 16 minutes until the edges are just barely golden but the centers are still pale. Let cool on the baking sheet for 10 minutes before transferring to a wire rack. Cookies will firm up and become perfectly crumbly as they cool.

Helpful Tips

Cream the Butter and Sugar Long Enough

When the recipe says to beat the butter and powdered sugar for about 3 minutes, that timing actually matters. You want the mixture to look noticeably lighter in color and fluffy in texture. This step adds tiny air pockets that help give the cookies a tender crumb.

If you only mix for a minute and call it done, the cookies will come out denser and less delicate. Use a hand mixer or stand mixer and let it go the full 3 minutes on medium speed.

Scrape down the sides of the bowl once or twice during this step so everything gets mixed evenly. Butter likes to stick to the edges and you don’t want dry clumps of sugar hiding in there.

Use a True 1-to-1 Gluten Free Flour

Not all gluten free flours are the same. For this recipe you need a 1-to-1 baking flour, which is a blend designed to replace regular all purpose flour directly. Brands like Bob’s Red Mill 1-to-1 or King Arthur Measure for Measure work great here.

If you use a single flour like almond flour or rice flour on its own, the cookies will not turn out right. They’ll either be too crumbly, too dense, or have a gritty texture.

Also, spoon the flour into your measuring cup and level it off with a knife instead of scooping directly from the bag. Scooping packs the flour down and you’ll end up with too much, which makes the dough dry and the cookies tough.

Don’t Skip the Cornstarch

The cornstarch in this recipe is what gives these shortbread cookies that classic melt-in-your-mouth texture. Without it, gluten free shortbread can feel dense and a little heavy.

Cornstarch is naturally gluten free, but if you’re being extra careful, double check the label on your brand to make sure it’s not processed in a facility with wheat. Most major brands are safe, but it’s always worth a quick look.

Frequently Asked Questions

Why do I need to refrigerate the dough for an hour?

Chilling the dough firms up the butter, which makes it much easier to slice into clean, even rounds. If you try to slice the log while it’s still soft, the cookies will squish and lose their shape.

If you’re in a hurry, you can pop the wrapped dough log in the freezer for about 25 to 30 minutes instead. Just make sure it’s firm enough to slice without crumbling or flattening.