Put oats, baking powder, and salt into a blender. Pulse a few times until it resembles flour.
Add banana, egg, almond milk, and vanilla, and blend until smooth. Let batter sit for 3-5 minutes to thicken slightly.
Heat and grease a pan over medium-low heat. Pour pancake batter directly from the blender container onto the pan. Cook pancakes until bubbles start to form on top, about 2-3 minutes. Flip and cook for another 1-2 minutes.
Repeat until no batter remains, keeping the other pancakes warm on a pan in the oven.
For the bananas, add the coconut oil and coconut sugar to a large sauté pan. Once melted and shimmering, add the bananas. Cook, flat side down, for 3 minutes until caramelized, then flip and cook another minute. Remove from heat.
Serve pancakes with caramelized bananas, chopped nuts, and a drizzle of maple syrup, if desired.