Preheat oven to 350°F and grease a mini muffin pan.
In a bowl, whisk together flour, sugar, baking powder, baking soda, and salt.
In another bowl, mix buttermilk, egg, maple syrup, melted butter, and vanilla.
Combine wet and dry ingredients until just mixed. Don’t over-stir.
Spoon batter into muffin cups, filling about two-thirds full.
Bake for 12–14 minutes until golden and set.
Cool slightly, then serve warm with maple syrup for dipping.