Jalapeno Cornbread

Ingredients

• 1 large egg
• ¼ tsp. baking soda
• 2 Tbsp. unsalted butter
• 1 Tbsp. baking powder
• ¾ tsp. kosher salt
• 2 Tbsp. white sugar
• 1 cup yellow cornmeal (175 g)
• 1 cup all-purpose flour (140 g)
• 1 and ¼ cups buttermilk, well shaken
• ¼ cup vegetable oil, like corn or canola
• 4 oz. grated sharp cheddar (about 1 cup), divided
• 2 medium green onions, chopped, with dark green parts separated from the white and light green parts
• 3 Tbsp. minced jalapenos, 1 large jalapeno with seeds and inner membrane removed