Preheat the oven to 350 degrees Fahrenheit. Spray a mini muffin tin with cooking spray. Set aside.
In a medium bowl, combine the flour, baking powder, baking soda and salt.
In a measuring cup or small bowl, whisk together the buttermilk, egg, maple syrup, melted butter and vanilla.
Add wet ingredients to the dry ingredients and stir with a spoon until combined.
Fold in the chocolate chips, reserving a few to sprinkle on top.
Spoon the pancake batter into the mini muffin pan, about 2/3 full.
Bake for 10 to 12 minutes. They should be puffed up and the edges are starting to golden.
Serve with maple syrup, if desired.
Notes
Storage: Store in an airtight container in the fridge for up to 4 days. To freeze, allow them to cool completely, then store in a freezer safe container in the freezer for up to 3 months.To reheat, pop them in the microwave for 10 seconds to warm them up. Or reheat in the oven.