Cinnamon Muffins

Directions

1. 1
   Preheat oven to 400F; line 11 muffin cups with paper liners.
2. 2
   In a medium bowl, whisk together flour, baking powder, baking soda, salt and cinnamon.
3. 3
   In a large bowl, whisk together sugars and the egg until smooth.
4. 4
   Beat in vegetable oil and vanilla.
5. 5
   Working in 2 or 3 additions, alternate adding the flour and the buttermilk to the sugar mixture, stirring until just combined.
6. 6
   In a small bowl, stir together remaining brown sugar and cinnamon.
7. 7
   Fill each muffin cup about 1/2 full.
8. 8
   Sprinkle with a scant 1/2 tsp of the brown sugar mixture into each cup.
9. 9
   Evenly divide remaining batter on top and sprinkle with remaining sugar mixture.
10. 10
    Bake at 400F for 15-18 minutes, until a tester comes out clean.
11. 11
    Transfer to a wire rack to cool completely before eating.