Pour the raspberries into a medium mixing bowl and mash them with the back of a fork until they are fully broken down.
Spoon clusters of the mashed raspberries onto a baking sheet lined with parchment paper or a silicone baking mat, then transfer to the freezer for a minimum of 2 hours or until they are fully frozen.
Pour the white chocolate chips into a microwave safe bowl with 1 tbsp of vegetable oil. Microwave in 30 second intervals, stirring in-between, until melted and smooth.
Repeat the melting process with the semi-sweet chocolate chips, then coat half of the clusters in the melted white chocolate and the other half in the melted semi-sweet chocolate.
Transfer the remaining white chocolate into a ziploc bag, cut off one end, then drizzle the white chocolate over the semi-sweet chocolate coated clusters.
Transfer the remaining semi-sweet chocolate into a ziploc bag, cut off one end, then drizzle the semi-sweet chocolate over the white chocolate coated clusters.
Return the chocolate-dipped raspberry clusters back into the freezer for 30 minutes or until set through.
Once set, carefully break off the excess candy-coating pieces around each cluster before enjoying!