1 cup fresh blueberries
1/2 cup Greek yogurt
1/4 cup orange juice
1 tablespoon white sugar, or to taste
1/4 teaspoon vanilla extract
1 pinch ground cinnamon, or to taste
3 ice cubes
Blend blueberries, yogurt, orange juice, sugar, vanilla extract, and cinnamon together in a blender on low speed for 30 seconds; increase speed to high and blend until smooth, about 2 minutes. Add ice and blend on high until smooth, about 1 minute more.