In a mixing bowl, whisk together the flour, sugar, baking powder, baking soda, and salt.
In a separate bowl, whisk together the buttermilk, egg, melted butter, and vanilla extract until well combined.
Pour the wet ingredients into the dry ingredients and gently stir until just combined. Be careful not to overmix; a few lumps are okay. Let the batter rest for 5 minutes.
Heat a non-stick skillet or griddle over medium-high heat and lightly grease it with cooking spray or a small amount of butter.
Pour 1/4 cup portions of the pancake batter onto the skillet to form pancakes. Cook until bubbles form on the surface, then flip and cook the other side until golden brown, about 2-3 minutes per side.
While the pancakes are cooking, combine the sliced bananas, strawberries, maple syrup, and ground cinnamon in a bowl. Toss gently to coat the fruits with the syrup and cinnamon.
Once the pancakes are done, stack them on a plate and top with the banana and strawberry mixture.
Drizzle with extra maple syrup if desired, and serve your Homemade Fluffy Pancakes with Banana and Strawberry warm.