Preheat oven to 180C

Line 2 trays with baking paper

Place butter and sugar into bowl. Mix 40 seconds/speed 3.5.

Scrape down.

Add milk and mix again, bringing up to speed 3.5 slowly, for 30 seconds.

Add remaining ingredients and mix on dough setting for 20 seconds.

Roll 2 teaspoonsful of dough into balls and place onto trays, leaving a little room to spread.

Press down gently with a fork - dust with cornflour or icing sugar to stop sticking.

Bake 15 - 20 minutes or until light golden.

Cool on a wire rack while making buttercream filling.

Mix icing sugar and butter for 30 seconds, gradually increasing to speed 3-4.

Scrape down and repeat until smooth and creamy.

Spread jam on one biscuit and buttercream on the other, then join together gently.