Prepare Dry Ingredients: In a large bowl, combine oats, flour, baking powder, baking soda, salt, and cinnamon.
Prepare Wet Ingredients: In another bowl, mash bananas and whisk with eggs, milk, melted butter, vanilla, and optional honey.
Combine Ingredients: Pour the wet mixture into the dry ingredients and stir until just combined. The batter will be slightly thick.
Cook Pancakes: Heat a nonstick skillet or griddle over medium heat and lightly grease with butter or oil. Pour ¼ cup of batter per pancake onto the skillet. Cook 2–3 minutes until bubbles form on top and edges look set. Flip and cook an additional 1–2 minutes until golden brown and cooked through.
Serve Immediately: Stack pancakes on plates, top with butter, honey, or maple syrup, and garnish with banana slices or berries.