Prepare Ingredients: Gather all your ingredients. If using fresh blueberries, consider freezing them beforehand for a thicker texture.
Add Ingredients to Blender: In a high-powered blender, add the frozen blueberries, banana, rolled oats, and milk. If using Greek yogurt, honey or maple syrup, and cinnamon, add those as well.
Blend Until Smooth: Blend on high until the mixture is completely smooth and creamy. If the smoothie is too thick, add a little more milk to reach your desired consistency.
Taste and Adjust Sweetness: Taste the smoothie and adjust the sweetness if necessary by adding more honey or maple syrup.
Serve: Pour the smoothie into glasses and enjoy immediately. You can garnish with fresh blueberries or a sprinkle of oats if desired.
Optional Add-ins: For extra nutrition, consider adding a handful of spinach or a tablespoon of chia seeds.
Enjoy: This Blueberry Oatmeal Smoothie is perfect for breakfast or a snack, providing a delicious blend of flavors and a good source of fiber and protein!