01 -  Preheat oven to 350°F. Grease an 18-cup mini muffin tin or line with paper liners. 
 02 -  In a large mixing bowl, whisk together all-purpose flour, granulated sugar, baking powder, baking soda, salt, and ground cinnamon until well blended. 
 03 -  In a separate bowl, whisk together whole milk, pure maple syrup, melted butter, eggs, bourbon, and vanilla extract until smooth. 
 04 -  Pour the wet mixture into the dry ingredients and gently fold just until combined. Avoid overmixing to retain a tender texture. 
 05 -  Evenly divide batter among mini muffin cups, filling each approximately three-quarters full. 
 06 -  Bake for 16 to 18 minutes, or until a toothpick inserted in the center of a muffin ball comes out clean. 
 07 -  Allow muffins to rest in the tin for 3 to 5 minutes, then carefully remove and transfer to a wire rack. 
 08 -  While still warm, brush each muffin ball with melted butter, then roll in cinnamon sugar mixture prepared by combining 1/2 cup granulated sugar and 2 teaspoons ground cinnamon in a small bowl. 
 09 -  Enjoy warm or at room temperature as desired.