-Preheat oven to 425 degrees. Put 4 Tbls butter in a 9-inch cast-iron skillet; place in oven until butter is melted and pan is heated through, 3-5 minutes. -Meanwhile, back at the ranch, in a medium bowl, whisk cornmeal, sugar, baking soda, baking powder, and salt; set aside. In a large bowl, whisk together eggs, buttermilk and 4 Tbls of butter. -Carefully remove hot skillet from oven. Using a pastry brush, coat bottom and sides of pan with melted butter in skillet -Stir cornmeal mixture into buttermilk mixture until just moistened. Stir in jalapeños. -Scrape batter into hot skillet; bake until golden, about 25 minutes or until toothpick inserted near the center comes out clean. -Let cool at least 10 minutes, cut into squares or wedges, serve warm.