Preheat oven to 350 degrees. Butter 20 (1/4-cup) muffin cups; set aside.
In a medium bowl, whisk together flour, cornmeal, baking powder, and salt; set aside.
In a large bowl, mix together sugar and butter; stir in honey and maple syrup until well combined. Add egg and continue mixing until well combined. Alternately add flour mixture and milk mixture to sugar mixture, mixing well after each addition and beginning and ending with the flour mixture. Stir in corn kernels until just combined.
Fill prepared muffin cups 3/4 full with corn mixture; sprinkle tops with turbinado sugar. Transfer to oven and bake until tops are golden brown, about 14 minutes. Let cool slightly in pans before serving.