Ingredients:
- 1 cup (120g) Fresh or Frozen Raspberries (for swirl)
- 2 tablespoons (25g) Granulated Sugar (for swirl)
- 1 teaspoon Fresh Lemon Juice (for swirl)
- 1 cup (227g) Unsalted Butter, very cold and cubed (for dough)
- 1/2 cup (100g) Granulated Sugar (for dough)
- 1/4 teaspoon Fine Sea Salt
- 2 teaspoons Pure Vanilla Extract
- 2 1/4 cups (270g) All-Purpose Flour (Sifted)
Instructions:
- Phase 1: Prepare the Raspberry Swirl. Combine raspberries, sugar, and lemon juice in a small saucepan. Simmer gently until the berries break down (about 5-7 minutes).
- Mash the cooked berries lightly, then press the mixture through a fine-mesh sieve to remove seeds. Discard seeds. Spread the resulting thick reduction onto a small plate lined with parchment paper. Chill until completely firm and spreadable (about 30 minutes).
- Phase 2: Make the Shortbread Base. In a mixer with the paddle attachment, cream the cold butter and sugar until just combined and pale (do not over-cream).
- Mix in vanilla and salt. Gradually add the sifted flour, mixing on low speed only until the dough just comes together into a shaggy mass. Do not overwork the dough.
- Phase 3: Assemble the Swirl. Divide the shortbread dough in half. Flatten each half into a rough rectangle between two sheets of plastic wrap.
- Spread half of the chilled raspberry reduction evenly over the surface of the first dough rectangle. Place the second dough rectangle directly on top of the raspberry-covered dough.
- Carefully roll the layered dough into a tight log, approximately 1.5 to 2 inches in diameter. Wrap the log tightly and chill in the refrigerator for at least 2 hours, or until firm enough to slice.
- Phase 4: Baking. Preheat oven to 350°F (175°C). Line baking sheets with parchment paper.
- Remove the dough log from the fridge, unwrap, and slice into rounds about 1/4-inch thick. Place cookies on prepared sheets, spacing about 1 inch apart.
- Bake for 14–16 minutes, rotating halfway through, until the edges are set and very lightly golden. They should remain pale in the centre.
- Cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.