Pour the yogurt into your popsicle maker almost until the rim. Leave some space to add the raspberry.
Crush or puree the raspberries and add into the yogurtmix. Take a wooden stick or something small and stir the raspberries into the yogurt so you get a nice pattern.
Freeze for at least 4 hours.
To take them out leave to stand for a little while so you can pull them out or quickly dip them in warm water.