Add the rolled oats to a blender and blend until they reach a fine, flour-like consistency.
Add the ripe banana, eggs, Greek yogurt, baking powder, cinnamon, vanilla extract, and salt. Blend until smooth and evenly combined.
If the batter is too thick, add 1 tablespoon of milk at a time and blend until the batter is thick but pourable.
Allow the pancake batter to rest for about 5 minutes so the oats can absorb some of the moisture.
Heat a nonstick skillet or griddle over medium-low heat and lightly grease it with butter or cooking oil.
Pour about 1/4 cup of batter onto the skillet for each pancake. Cook for 2–3 minutes, until the edges begin to set and bubbles appear on the surface.
Carefully flip the pancakes and cook for another 1–2 minutes, until golden brown and cooked through.
Transfer the pancakes to plates and serve warm with fresh berries, sliced banana, Greek yogurt, maple syrup, or your favorite toppings.