Build the flavour base. Place a large, heavy-based ovenproof skillet or casserole dish over a medium heat. Add the olive oil and let it warm until it shimmers. Tip in the chopped onion and red pepper, stirring them around. Cook for 8–10 minutes, until they soften and turn translucent, releasing a sweet, earthy scent. The edges of the peppers should begin to brown slightly.

Brown the beef. Increase the heat to medium-high and add the beef mince. Break it up with a wooden spoon. Let it cook, undisturbed for a minute, then stir. You want to hear a good, steady sizzle. Continue until the meat is well-browned and no longer pink, which should take about 6–8 minutes. The kitchen will smell deeply savoury at this point.

Stir in the aromatics. Reduce the heat to medium. Add the minced garlic and tomato purée, stirring constantly for one minute. The purée will darken and become fragrant, sticking slightly to the bottom of the pan. This step is crucial for deepening the overall flavour.

Simmer the sauce. Pour in the passata, apple cider vinegar, brown sugar, Worcestershire sauce, smoked paprika, and mustard powder. Season generously with salt and pepper. Stir everything together, scraping up any browned bits from the base of the pan. Bring the sauce to a gentle bubble, then lower the heat to a simmer. Let it cook, uncovered, for 15–20 minutes, stirring occasionally. You will see the sauce thicken and reduce, turning a deep, glossy mahogany colour. The aroma will be rich, tangy, and slightly sweet.

Prepare the cornbread batter. While the sauce simmers, preheat your oven to 200°C (180°C fan). In a large bowl, whisk together the plain flour, cornmeal, baking powder, bicarbonate of soda, and salt. In a separate jug, whisk the eggs, buttermilk, and whole milk until combined. Pour the wet ingredients into the dry, along with the melted butter. Stir with a fork until just combined. The batter should look thick and slightly lumpy; do not overmix. You will see small bubbles forming.

Assemble the casserole. Taste the Sloppy Joe mixture and adjust the seasoning. It should be rich and slightly tangy. Spread the meat mixture evenly in the skillet or transfer it to a baking dish. Gently dollop the cornbread batter over the top in spoonfuls, then use a spatula to spread it carefully to the edges, covering the meat completely. The batter will be thick and pale yellow.

Bake to golden perfection. Place the dish in the preheated oven. Bake for 25–30 minutes, or until the cornbread topping is a deep golden brown and a skewer inserted into the centre comes out clean. You will see the top crack slightly in places, and the edges will pull away from the sides of the dish. The smell coming from the oven will be irresistible—a combination of baked corn, sweet tomatoes, and savoury beef.

Rest before serving. Remove the casserole from the oven and let it stand on a wire rack for at least 10 minutes. This rest is essential; it allows the cornbread to set and the filling to stabilise, making it much easier to serve clean portions. The top will remain warm and slightly crisp.