01 - Preheat your oven to 400°F.
02 - In a large pot or Dutch oven, heat the olive oil over medium heat. Add the diced onion and bell pepper, and sauté them until softened, which takes approximately 5 minutes.
03 - Stir in the minced garlic and cook for about 1 minute until it becomes fragrant.
04 - Add the ground turkey to the pot and cook, breaking it up with a spoon, until it is no longer pink. This usually takes 5 to 7 minutes.
05 - Stir in the tomato paste, crushed tomatoes, diced tomatoes, drained and rinsed kidney beans, black beans, frozen corn, chili powder, ground cumin, smoked paprika, dried oregano, and cayenne pepper (if using). Season with salt and black pepper to taste.
06 - Bring the chili mixture to a boil, then reduce the heat to low and let it simmer uncovered for 30 minutes, stirring occasionally to prevent sticking.
07 - While the chili simmers, begin preparing the cornbread. In a large mixing bowl, whisk together the cornmeal, all-purpose flour, granulated sugar, baking powder, and salt.
08 - In a separate bowl, whisk together the milk, large eggs, and melted unsalted butter. Pour the wet ingredients into the dry ingredients, stirring just until combined and no dry streaks remain.
09 - Pour the cornbread batter into a greased 8-inch square baking dish. Bake for 20 to 25 minutes, or until the top is golden brown and a toothpick inserted into the center comes out clean.
10 - Serve the hearty turkey chili hot, accompanied by a piece of warm cornbread. Garnish with fresh cilantro, sour cream, or shredded cheese if desired.