01 - Preheat oven to 350°F and line a 12-cup muffin tin with paper liners or grease lightly.
02 - Cook bacon in a skillet over medium heat until crisp. Drain on paper towels, then chop into small pieces.
03 - In a large bowl, whisk together flour, sugar, baking powder, baking soda, and salt.
04 - In another bowl, whisk together milk, eggs, maple syrup, melted butter, and vanilla extract.
05 - Add wet ingredients to dry ingredients and stir until just combined; do not overmix.
06 - Gently fold in most of the chopped bacon, reserving a small amount for topping.
07 - Divide batter evenly among muffin cups. Sprinkle reserved bacon on top of each.
08 - Bake for 18-20 minutes, or until a toothpick inserted into the center comes out clean.
09 - Allow to cool in pan for 5 minutes, then transfer to a wire rack. Drizzle with maple syrup before serving.