Preheat your oven to 400°F (200°C). If using a cast-iron skillet, place it in the oven to heat up.
This helps form a crisp crust.
In a large bowl, whisk together the cornmeal, flour, sugar, baking powder, baking soda, and salt until evenly combined.
In a separate bowl, whisk the buttermilk, melted butter, eggs, and honey (if using) until smooth.
Pour the wet ingredients into the dry ingredients. Stir gently with a spatula until just combined. Do not overmix; a few small lumps are fine.
Fold in 1 cup of the shredded cheddar, the diced jalapeños, corn kernels, and scallions. Reserve the remaining 1/2 cup cheddar for the top.
If using a hot skillet, carefully remove it from the oven and add 1 tablespoon of butter.
Swirl to coat, letting it sizzle and foam.
Scrape the batter into the skillet or prepared baking pan. Smooth the top, then sprinkle the remaining 1/2 cup cheddar evenly over the surface.
Bake for 18–24 minutes, until the edges are deeply golden and a toothpick inserted in the center comes out with a few moist crumbs.
Cool in the pan for 10 minutes. Slice into squares or wedges and serve warm.
Optionally drizzle with honey or a pat of butter.