For cookie dough: Mix flour, baking powder, and salt together in a bowl. Cream butter and sugar until light and fluffy. Then add in eggs and vanilla essence and mix until well combined. Add in flour mixture; combine well to form dough. Keep in the chiller for 20 minutes.
Preheat oven to 170 degrees. Roll out dough between parchment papers to 8mm thickness. Cut with desired cookie cutters.
Bake until cookies are pale for 10 minutes, remove from oven and fill cut outs with crushed candy. Bake until cookies until light golden brown and candy is melted, 5 minutes. Let cool on baking sheets on wire racks.