Rainbow cookies

• softened butter175g g
• golden caster sugar↗50g g
• icing sugar↗50g g
• egg yolks↗2
• vanilla extract↗2 tsp tsp
• plain flour↗300g g
• zest and juice 1 orange
• icing sugar↗140g g

  sifted

• sprinkles↗

  to decorate

Step-by-step instructions

1. 1

   Heat oven to 200C/180C fan/gas 6. Mix the butter, sugars, egg yolks and vanilla with a wooden spoon until creamy, then mix in the flour in 2 batches. Stir in the orange zest. Roll the dough into about 22 walnut-size balls and sit on baking sheets. Bake for 15 mins until golden, then leave to cool.

2. 2

   Meanwhile, mix the icing sugar with enough orange juice to make a thick, runny icing. Dip each biscuit half into the icing, then straight into the sprinkles. Dry on a wire rack.