
This hearty chicken pasta bake combines crispy bacon, tender chicken, sweet peppers, and a rich tomato-mascarpone sauce under a bubbling cheese topping. It is a comforting, family-style dinner that is easy to prep ahead and perfect for busy weeknights.
Heat the olive oil in a large, wide casserole or deep frying pan over medium heat. Add the bacon and cook for 5 to 7 minutes until crisp and browned, then transfer it to a bowl with a slotted spoon. Add the chicken to the pan, toss to coat in the bacon fat, and cook over medium-high heat for 3 to 5 minutes until lightly browned on all sides. Transfer the chicken to the bowl with the bacon.
Reduce the heat to medium and add the red onion and garlic with a pinch of salt. Cook for 10 to 12 minutes, stirring occasionally, until softened. Stir in the red and yellow peppers, oregano, and chilli flakes, if using, then cook for 8 to 10 minutes more until the peppers are tender. Pour in the chopped tomatoes and add a splash of water to rinse out the cans, then stir that into the pan. Add the sugar, cooked chicken, cooked bacon, and most of the parsley. Season with salt and black pepper, bring to a simmer, and cook for 20 to 25 minutes until the sauce thickens. Stir in the mascarpone until smooth and fully melted into the sauce.
Meanwhile, cook the pasta in salted boiling water for 2 minutes less than the package directions. Drain well, reserving about 1 cup of the pasta cooking water. Heat the oven to 220C/200C fan/gas 7. Taste the sauce and adjust the seasoning, then fold in the pasta. Add a splash of the reserved pasta water if needed to loosen the sauce. Spoon everything into an ovenproof baking dish, top with the cheddar and mozzarella, and bake for 10 to 15 minutes until golden and bubbling. Finish with the remaining parsley and serve hot.
Do not overcook the pasta before baking or it can turn soft in the oven. Mascarpone can be replaced with cream cheese or heavy cream for a similar richness. The assembled pasta bake can be cooled, covered, and frozen for up to 3 months; thaw overnight in the refrigerator before baking.