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My Ultimate Crispy Shortbread Biscuit Recipe

A classic shortbread biscuit recipe with a toasty twist: a small amount of toasted milk powder and a longer bake give these golden, buttery fingers a depth of flavour that you will not find in a traditional pale shortbread.
Print Recipe
Tray of sugar-dusted shortbread bars cut into rectangles in a baking pan.
Prep Time:15 minutes
Cook Time:45 minutes

Ingredients

  • 180 grams salted butter at room temperature
  • 90 grams caster sugar plus extra for sprinkling
  • 1 tsp vanilla extract or paste
  • 220 grams of cake flour
  • 50 grams cornflour
  • 1 Tbsp toasted milk powder (optional but recommended

Instructions

  • Preheat your oven to 150°C / 300°F. Line a 20cm / 8-inch square cake tin with baking paper.
  • Using an electric or hand-held mixer, cream the butter, caster sugar, and vanilla together until light and fluffy, about 3 to 4 minutes.
  • Add the cake flour, cornflour, and toasted milk powder. Mix briefly until just combined and the dough holds together. The dough will be quite stiff. Use a spatula to scrape the flour from the sides of the bowl, making sure everything is fully absorbed. The dough is very thick.
  • Break the dough into pieces and press it evenly into the prepared tin. Use an offset spatula or bench scraper to even out the surface.
  • Bake for 45 to 50 minutes until lightly and evenly golden across the top. If you prefer a more blonde shortbread, cover loosely cover with foil for the last 15 minutes of baking, and check for your level of doneness from about 30 minutes into the baking time.
  • About 5 to 10 minutes before the end of the baking time, sprinkle lightly with caster sugar. Or, you can add it as it comes out of the oven.
  • Remove from the oven. While still warm, use a ruler or tape measure to mark where you want to cut, then slice into fingers using a sharp, unserrated knife.
  • Allow the shortbread to cool completely in the tin before removing and breaking the fingers along the cut lines. Store in an airtight container at room temperature for up to two weeks.
  • To make individual round biscuits: Divide the dough into two equal portions. Roll each into a log, wrap tightly in cling film, and refrigerate until firm, at least 1 hour. Line 1 to 2 baking trays with baking paper. Slice rounds off each log and place on the trays with a little space between each. Bake at 150°C / 300°F for 20 to 22 minutes until just golden at the edges. Sprinkle with caster sugar about 5 minutes before the end of baking.

Notes

Toasted milk powder adds a deep, slightly malty biscuitiness to the flavour. To toast your own, spread milk powder onto a non-stick frying pan over a medium-low heat. Keep moving it around until it gets evenly browned. Store in an airtight container.
If your shortbread comes out underbaked, see the twice-bake instructions in the post above. Allow to cool completely, cut, place on a lined baking sheet, and bake at 150°C / 300°F for 15 to 30 minutes, until the colour and texture are to your liking.
Storage: Airtight container at room temperature for up to 2 weeks. Do not refrigerate.
Freezing: Baked shortbread freezes well for up to 3 months, layered between baking paper in an airtight container. Unbaked dough logs freeze for up to 3 months; slice and bake directly from frozen, adding a few extra minutes to the baking time.
Gifting: Shortbread makes a lovely gift and travels extremely well. Layer into a tin or small box and tie with a ribbon.