Use a blender to blend everything for strawberry layer. Pour 22 grams (4 tsp), straight from the blender, into 1 popsicle mold cavity. Does it look about 1/3 of a popsicle? If so, use 22 grams for all the other layers. Does it look quite a bit less than 1/3? Then add more than 22 grams. I used 25 grams (a bit more than 1.5 tbsp) per popsicle, but my photographer couldn't fit in the same amount.
1 cup (170 grams) strawberries, 1 tablespoon (14 grams) plain Greek yogurt, 2 tablespoons (40 grams) maple syrup, 1/2 teaspoon vanilla extract
Freeze for 40-60 minutes. Not so much longer because it shouldn’t freeze solid. The strawberry layer and the white layer shouldn’t be frozen solid before putting in the popsicle sticks, or else you won’t be able to get the sticks in after pouring in the blueberry layer. The strawberry layer should be hard enough that the top of the layer can withstand pouring the white layer over it. If you need more time, freeze longer.
Do the same with the white layer. You can just mix the white layer ingredients together in a bowl or rinse out the blender jar and blend the white layer in there. If 40 minutes isn’t long enough for it to freeze (it was for me), then freeze longer. My photographer needed 2 1/2 hours (we're not sure why - see post for more info).
2/3 cup (160 grams) plain Greek yogurt, 3 tablespoons (60 grams) maple syrup, 1/2 teaspoon vanilla extract
Blend the blueberry layer JUST before pouring into the molds. It gets weird and gelatinous if it sits while you wait for the white layer to freeze. Blend the blueberry layer and pour over the white layer.
1 cup (146 grams) blueberries, 3 tablespoons (42 grams) plain Greek yogurt, 1 tablespoon (20 grams) maple syrup, 1/2 teaspoon vanilla extract
Put the top of the popsicle mold on, and stick the popsicle sticks through the slots.
Freeze for 8 hours or until totally solid.
If they don’t come out easily, you can pour warm water around the sides and bottom of the popsicle mold to help loosen them.