Add both kinds of berries to a food processor and chop until they are in small pieces.

Combine the chopped berries, syrup, and beet root powder (if using) with the Greek yogurt and stir until well combined.

Spread the mixture into a thin layer on a parchment paper lined baking sheet and freeze for about an hour.

Melt the chocolate chips and coconut oil together and spread a thin layer over the berry and yogurt layer.

Pop the tray back into the freezer and freeze until solid.

Break into pieces and store in an airtight container in the freezer.