Gently stir berries and Spry® xylitol sweetener together over a low heat in a saucepan until xylitol is fully dissolved. (Stir when required to prevent burning)
Increase temperature to medium to high heat and bring to rapid simmer. Cook for 8-10 minutes, stirring often, until berries are thick and jammy.
Remove from heat and cool to room temperature.
Whisk together the yoghurt, ¼ cup of milk, berries, and granola. Mixture should be thick but pourable. Whisk in more milk if required.
Pour mixture into 6 ice block moulds (approx. ½ cup capacity)
Tap the moulds lightly against counter to remove air bubbles.
Insert ice block sticks into each mould and place in freezer for at least 6 hours.