Combine Ingredients: Gather your blender and measuring cup. In the blender, combine rolled oats, milk, Greek yogurt, honey, cinnamon, and a peeled banana cut into smaller chunks.

Blend Until Smooth: Secure the lid and blend on high speed for about 30 seconds until creamy and smooth. Stop to scrape down the sides if necessary.

Adjust Consistency: If too thick, add more milk gradually and blend again. If too thin, add more oats or yogurt.

Serve Immediately: Pour into a glass, sprinkle with cinnamon or add banana slices for presentation, and enjoy!