Super Shortbread Biscuits

These shortbread biscuits are a clean, classic Scottish-style cookie made with just five ingredients. The key ratio is the butter (a full cup, two sticks) cut with both flour and cornstarch. The cornstarch is the not-so-secret weapon: it tenderizes the dough by limiting gluten development, giving the finished cookies that distinctive sandy, melt-in-your-mouth crumb that real shortbread is known for.

The slice-and-bake format makes these foolproof. Roll the dough into two 6-inch logs, wrap in plastic, chill until firm, then slice into uniform rounds. No rolling pin, no cookie cutters, no scraps. Ten to fifteen minutes in a moderate oven and they’re done, just barely golden at the edges with pale ivory centers.

They’re plain on purpose. Serve them with afternoon tea, a dab of jam, fresh berries, or a spoonful of whipped cream. Add dried cranberries or raisins to the dough if you want something with a bit more character.

Pro Tips

• Use powdered sugar, not granulated. The fine texture dissolves into the butter and gives a smoother, more refined crumb. Granulated leaves a slightly grainy bite.
• Chill the logs the full hour. Underchilled dough won’t slice cleanly and the rounds spread into oblong puddles.
• Slice with a sharp, thin knife. Dull knives squash one side of the round; thin sharp blades cut clean.
• Don’t overbake. Pull when the edges are barely tinged gold; the centers should still look pale. They firm up considerably as they cool.

Variations

• Add 1 teaspoon of vanilla extract or a tablespoon of finely grated lemon zest to the dough for a subtle flavor lift.
• Roll the chilled logs in coarse turbinado sugar before slicing for a sparkly, sandy edge on each cookie.
• Stir in chopped dried cranberries or chocolate chips for a more festive, holiday-cookie-tin version.