5ozYogurtpreferably full fat and optionally sweetened
Cook the strawberries and blueberries in separate saucepans with 2 tablespoons water and 2 tablespoons of sugar (or your preferred sweetener) each for 4 to 5 minutes over medium heat.
Blend each of the berries separately until smooth. The berries can be passed through a fine mesh strainer to remove the seeds if you prefer. Refrigerate to cool.
Using a funnel; fill the popsicle molds ⅓ the way up with each of the flavors (strawberry followed by yogurt followed by blueberry) freezing each for 1 to 2 hours before adding the next. Add the popsicle stick when filling the second flavor.
Serve by running water over the popsicle molds for a few seconds to easily remove the rocket pops for enjoying.
If using plain yogurt, it's a good idea to add sweetener such as honey or sugar.