01 - Preheat your oven to 425°F (220°C). Place a cast-iron cornstick pan or muffin pan in the oven to heat while you prepare the batter.
02 - In a spacious mixing bowl, thoroughly whisk together the cornmeal, all-purpose flour, granulated sugar, baking powder, baking soda, and fine sea salt.
03 - In a separate bowl, whisk the buttermilk, large eggs, and melted unsalted butter until the mixture is smooth and well-emulsified.
04 - Create a well in the center of the dry ingredients and pour the wet mixture into it. Gently stir until just combined. It's important to avoid overmixing to maintain a tender crumb.
05 - Carefully fold in the finely chopped pickled jalapeños, chopped dill pickles, and shredded sharp cheddar cheese into the batter, distributing them evenly.
06 - With caution, remove the preheated pan from the oven. Using a pastry brush, generously coat each mold with vegetable oil.
07 - Spoon the batter evenly into the prepared hot molds, filling each depression approximately three-quarters full to allow for expansion during baking.
08 - Bake for 18 to 20 minutes, or until the cornbread sticks achieve a golden-brown hue and a toothpick inserted into the center emerges clean.
09 - Allow the sticks to cool in the pan for approximately 5 minutes. Then, gently remove them from the pan and serve them warm.