Buttery shortbread-style cookies sandwiched around a smooth vanilla custard cream filling — the perfect homemade version of the classic British treat.
For the Cookies
1½ cups all-purpose flour
¼ cup custard powder
¼ tsp salt
¾ cup unsalted butter, softened
½ cup powdered sugar
1 tsp vanilla extract
For the Filling
½ cup unsalted butter, softened
¼ cup powdered sugar
2 tbsp custard powder
1–2 tsp milk
Whisk flour, custard powder, and salt.
In another bowl, cream butter, powdered sugar, and vanilla until smooth.
Mix dry ingredients into wet until a soft dough forms. Chill 30 minutes.
Roll to ¼ inch thick. Cut into shapes. Bake at 350°F for 10–12 mins.
Cool completely.
Beat filling ingredients until fluffy. Pipe or spread onto half the cookies. Sandwich and serve.
Store airtight for up to 4 days. Dough can be frozen. Customize with embossed designs or colored filling.