Cream the butter and sugar till pale. Add the vanilla and mix well. Now add the baking powder and the maida to it. Add maida in 3 parts. Mix gently to get a crumbly dough. Divide the dough into 2 parts, 2:1 parts. The the smaller paer add 1 tsp milk and some food colour. Mix well. Cling both the doughs seperately and chill for 30 minutes.

Roughly break the coloured dough into chunks and randomly place these on the plain dough. Knead by folding 3 to 4 times so that you get a marble effect. Dust some maida on a plastic sheet, place the dough on it. Cover with a nother plastic sheet and roll out the dough to get uniform thickness. Using heart shaped cutter cut out the cookies.

Bake these cookies in an a preheated kadhai for 10 to 12 minutes or till the edges turn golden. Enjoy!