Preheat your oven to 350° and line a 12-count muffin tin.
In a medium bowl, stir together the flour, cinnamon, baking powder, baking soda, and salt. Set aside.
Squeeze the shredded zucchini of excess moisture using several layers of paper towels. Measure out 1 cup of squeezed shredded zucchini and set aside.
In a large mixing bowl, whisk together the Greek yogurt, coconut sugar, maple syrup, oil, eggs, and vanilla until there are no lumps remaining.
Add the dry ingredients and stir until roughly combined but not smooth (do not fully mix).
Add in the 1 cup of squeezed zucchini along with the blueberries, stirring until just combined.
Scoop the batter evenly into the 12 muffin cups (about ¾ full), then bake in the preheated oven for 19-21 minutes, or until a toothpick inserted in the centers comes out clean. Allow to cool, then serve!