Blend the dry base: Add oats to a blender and pulse until they resemble a fine flour.
Add the wet ingredients: Toss in bananas, eggs, milk, vanilla, baking powder, cinnamon, salt, and sweetener if using. Blend until smooth and pourable.
Let it rest 2–3 minutes to thicken slightly.
Heat the pan: Warm a nonstick skillet over medium heat. Lightly grease with butter or oil.
Cook the pancakes: Pour about 1/4 cup batter per pancake. If using add-ins, sprinkle them on top now.
Cook 2–3 minutes, until bubbles form and edges look set.
Flip gently: Turn and cook another 1–2 minutes, until golden and cooked through. Reduce heat if they brown too fast.
Serve warm: Top with fresh fruit, yogurt, nut butter, or a drizzle of maple syrup.