Preheat your pan or griddle: Set a nonstick skillet or griddle over medium heat. You want it hot but not smoking.
Have a little butter or oil ready for greasing.
Mash the bananas: In a large bowl, mash the bananas until mostly smooth. A few small lumps are fine.
Whisk in the wet ingredients: Add eggs, vanilla, and 1/2 cup milk (or buttermilk). Whisk until combined.
Stir in the sourdough starter until the mixture is uniform.
Mix the dry ingredients: In a separate bowl, whisk together flour, baking powder, baking soda, salt, sugar (if using), and cinnamon. This reduces clumping and ensures even rise.
Combine wet and dry: Add the dry mixture to the wet mixture. Stir gently with a spatula until just combined.
If the batter is too thick to pour slowly, add a splash or two more milk.
Rest the batter briefly: Let the batter sit for 5 minutes. This allows the flour to hydrate and the leavening to activate for fluffier pancakes.
Grease and test the heat: Lightly grease the pan. Flick a drop of water on the surface—if it sizzles and skips, it’s ready.
Cook the pancakes: Pour 1/4 cup batter per pancake.
If using add-ins like chocolate chips or nuts, sprinkle them on now. Cook until bubbles form on top and the edges look set, about 2–3 minutes.
Flip and finish: Flip gently and cook another 1–2 minutes, until golden brown and cooked through. Lower the heat if they’re browning too fast.
Serve warm: Stack with butter and maple syrup, or try yogurt and berries for a lighter finish.
A drizzle of honey or peanut butter is great too.