Preheat the oven to 400 degrees.
In a mixing bowl, lightly hand whisk flour, cornmeal, baking powder, baking soda and salt to combine.
In a separate mixing bowl, whisk eggs for 20 seconds.
Add in the sugar to the eggs and whisk vigorously for 30 seconds.
Add in melted butter and continue to whisk.
Add in the sour cream and milk and whisk.
Add the wet ingredients to the dry ingredients and gently mix until combined.
Spray a muffin tin with cooking spray. Make sure to spray the inside of each muffin tin and the top of the pan too. Be generous with the spray!
Using a cookie scooper or ice cream scooper, fill each greased tin 3/4 of the way full.
Bake for 12-15 minutes in a 400 degree oven.
Remove and let them cool slightly before taking them out of the muffin tin.
Serve warm with whipped butter!