01 - Preheat oven to 350°F. Grease a small baking dish or line a baking sheet with parchment paper.
02 - Combine cornmeal, flour, sugar, baking powder, baking soda, and salt in a bowl. In another bowl, whisk buttermilk, egg, and melted butter. Blend wet into dry ingredients until just mixed; pour into a greased 8-inch pan. Bake for 15–18 minutes or until set and golden. Cool and crumble 1 cup for the filling.
03 - Heat olive oil in a skillet over medium heat. Add celery, red bell pepper, green onions, and garlic; sauté 3–4 minutes until vegetables are softened. Remove from heat.
04 - In a large bowl, gently mix crab meat, crumbled cornbread, sautéed vegetables, mayonnaise, Cajun seasoning, lemon juice, cayenne (if desired), parsley, salt, and pepper, preserving the lump texture of the crab.
05 - Split rolls lengthwise, ensuring not to cut through; hollow out some interior to make space for filling.
06 - Generously fill each roll with crab-cornbread mixture and set onto the prepared baking dish.
07 - Brush tops of the stuffed rolls with melted butter.
08 - Bake for 10–12 minutes until rolls are golden and stuffing is heated throughout.
09 - Serve warm and garnish with extra parsley if preferred.