Preheat oven to 425ºF. Place a 10 inch cast iron skillet in the oven as it preheats.
Meanwhile, brown the 5 Tbsp butter in a small pan over medium heat. You want a nice toasty smelling dark brown butter. Set aside as you prepare the rest of the batter.
In a large bowl, whisk cornmeal, flour, baking powder, baking soda, and salt.
In a medium bowl, whisk eggs, sour cream, buttermilk, honey, and brown sugar.
Mix wet into dry until just combined. Careful not to over mix!
Stir in reserved brown butter.
Remove cast iron from the oven and add in the 3 Tbsp of butter. Once butter is melted, add in batter and spread out evenly.
Place in oven and bake 15-20 minutes until a toothpick inserted into the center of the cornbread comes out clean.
While the cornbread bakes, prepare the butter.
Mix the softened butter, scallions, jalapeños, honey, salt and pepper until fully combined. Set aside to eat with the bread.
Remove cornbread from oven and let cool 5 minutes. Serve warm with scallion jalapeño butter.