The Best Jam Shortbread Bars (2025)

FAQs

What is the key to good shortbread? ›

The key with shortbread is not to overhandle it. Make the dough exactly as instructed, but don't mess around making shapes or over rolling the dough - you will end up with delicious but tough biscuits. Stretching and pulling the dough activates the gluten in the flour, making chewy cookies and not crisp ones.

Always start with cold butter straight from the refrigerator. This will keep the dough from warming up, making it greasy and difficult to roll out. If the dough does get soft or sticky as you're rolling or cutting it, just put it back in the refrigerator for 10-15 minutes to chill the butter.

In the oven, the dough will spread as the butter in the mixture melts, but baking it from chilled helps reduce this effect. It's most important to do this if you are baking the shortbread in individual biscuits. Do you cut shortbread when hot or cold? Both work, it depends what you want to achieve.

The holes allow the moisture to escape during baking and more even heat distribution. This helps dry out and crisp up the cookies.

Why do you put shortbread cut-out cookies in the fridge before baking? This is to resolidify the butter. The butter is at room temperature when making the dough resulting in a soft dough. If baked straight away, the butter would melt away immediately when hitting the hot oven and the shortbread would spread.

Avoid making your shortbread too thick

This is much thicker than a roll-and-slice sugar cookie — or really any other popular type of cookie. If you keep your dough any thicker, you risk the dough coming out of the oven raw. If it's any thinner, the cookie will have a crispy texture with the snap of a graham cracker.

Bake the shortbread until it's a light golden brown across the top surface and a deeper golden brown around the edges, about 35 minutes. Remove the shortbread from the oven and turn it out of the pans and onto a clean work surface.

Cornstarch provides the shortbread with structure, but its biggest job is keeping the cookies extra soft, tender, and light. I love adding a small amount to chocolate chip cookies too. Optional Coarse Sugar Topping: For an optional sparkly crunch on your shortbread wedges, add a sprinkle of coarse sugar before baking.

Tip - It's crucial to not over-mix shortbread to avoid it shrinking when baked.

Can you leave shortbread out overnight? ›

Cookies with high moisture content, such as soft and chewy varieties, are more susceptible to spoilage when left out overnight. On the other hand, drier cookies, like biscotti or shortbread, can typically withstand longer periods at room temperature without significant quality deterioration.

Use unsalted butter for balanced flavour. Unsalted butter was traditionally used in baking because it was a superior product to salted - salt is used as a preservative so unsalted butter was thought to be fresher.

What happens if you don't dock shortbread before you bake it? The water found in butter will turn into steam which will cause the dough to rise. Docking limits the rise by providing air holes through which the developing steam may exit.

A good way to check to see if the shortbread is baked is to see if they are set - they will be slightly firm around the outside, and may be just beginning to turn golden around the edges. You want to keep them nice and pale so make sure your oven is running at the temperature it says that it is.

FOOD PROCESSOR / RUBBING BUTTER: Instead of creaming softened butter, the other method is to rub the butter in. This yields a more crumbly shortbread but the surface is rougher – see comparison photo in post.

Make sure you only beat your butter and sugar until it is well combined and starting to change colour rather than really pale and creamy. And once you have cut out or shaped your dough make sure you chill it for at least 30 minutes before baking so that the butter can re-solidify before reaching the heat of the oven.