Preheat your oven to 400°F (200°C). In a large bowl, whisk together cornmeal, flour, baking powder, and salt. In a separate bowl, combine milk, vegetable oil, egg, and sugar. Pour the wet ingredients into the dry ingredients and stir until just combined. Pour into a greased 8x8 inch baking pan and bake for 20-25 minutes until golden brown. Let cool completely, then crumble into bite-sized pieces.

In a medium bowl, whisk together mayonnaise, sour cream, and ranch seasoning until smooth and well combined. This creamy dressing will help bind all the layers together and add that signature Southern flavor.

In a large glass trifle bowl or clear serving dish, start with a layer of crumbled cornbread. Top with a layer of black beans, followed by corn, tomatoes, bell pepper, and red onion. Drizzle with about one-third of the dressing. Repeat the layers, ending with a final layer of cornbread on top.

Sprinkle the shredded cheddar cheese evenly over the top layer. Add the chopped turkey ham and fresh parsley. Drizzle with the remaining dressing. Cover and refrigerate for at least 2 hours, or overnight for best results.