01 - Combine the mashed bananas, eggs, milk, and vanilla extract in a blender. Blend on medium speed until the mixture is completely smooth and no banana lumps remain.
02 - Add the rolled oats, protein powder, baking powder, ground cinnamon, and salt directly into the blender with the wet mixture. Blend until a smooth, uniform batter forms, scraping down the sides as needed.
03 - Transfer the batter to a mixing bowl if desired, and fold in chia seeds, ground flaxseed, chopped walnuts, or chocolate chips if using. Allow the batter to rest for 2 to 3 minutes so it thickens slightly.
04 - Place a non-stick skillet or griddle over medium heat and lightly grease it with cooking spray, butter, or oil. Allow the surface to come to temperature before adding batter.
05 - Pour approximately 1/4 cup of batter per pancake onto the heated skillet. Cook for 2 to 3 minutes until bubbles appear across the surface and the edges look set. Flip each pancake carefully and cook for another 1 to 2 minutes until the underside is golden brown and cooked through.
06 - Remove cooked pancakes from the skillet and repeat with the remaining batter, re-greasing the pan as needed. Serve warm with fresh berries, nut butter, maple syrup, or your preferred toppings.