Step 1 - Grind the Oats First
Place the oats in the bottom of your blender and pulse a few times until finely ground. This step matters more than it seems grinding the oats alone, before any liquid goes in, ensures they break down into a smooth, flour-like consistency rather than staying chewy once blended with everything else.
Step 2 - Add Everything Else
Add the frozen banana, almond milk, peanut butter, maple syrup, vanilla, cinnamon, and salt to the blender with the ground oats.
Step 3 - Blend and Adjust
Blend until completely smooth and creamy, stopping to scrape down the sides of the blender as needed the peanut butter and ground oats can stick to the edges and need a little manual help to fully incorporate. Taste and add additional maple syrup if you'd like it sweeter. Add ice at the end and blend briefly if you want a thicker, colder result. Enjoy immediately.