01 - Preheat oven to 375°F. Grease a 9x9-inch baking dish or similar casserole dish.
02 - In a large bowl, whisk together cornmeal, all-purpose flour, granulated sugar, baking powder, baking soda, salt, Cajun seasoning, and smoked paprika.
03 - In a separate bowl, beat the eggs, then mix in whole milk and melted butter until well combined.
04 - Add the wet ingredients to the dry ingredients and fold until just combined for a tender texture.
05 - Fold in the sweet corn kernels, red bell pepper, chopped onion, sliced green onions, and 1 cup of cheddar cheese.
06 - Pour batter into the prepared baking dish and smooth the surface.
07 - Sprinkle the remaining ½ cup of cheddar cheese evenly over the top.
08 - Bake for 30 to 35 minutes, or until the center is set and the top is golden brown.
09 - Allow casserole to cool for 10 minutes before serving. Garnish with extra sliced green onions if desired.