
This creamy chicken Alfredo pasta bake is loaded with tender chicken, crispy bacon, spinach, and plenty of Parmesan. Finished with a crunchy breadcrumb topping, it is a comforting family dinner that is also great for making ahead.
Preheat the broiler to high. Line a baking tray with foil, lay the bacon rashers on top, and broil for about 5 minutes per side until crisp. Set aside to cool, then chop into bite-size pieces.
Heat the olive oil in a large deep frying pan or saucepan over medium-high heat. Season the chicken thighs lightly, add them to the pan, and brown on both sides. Stir in the oregano and crushed garlic, cook for 1 minute, then crumble in the stock cube and pour in 250 ml water.
Bring to a gentle simmer, cover, and cook over low-medium heat for 15 to 20 minutes, or until the chicken is tender. Add a splash of water if the pan starts to dry out. Transfer the chicken to a board, shred it with two forks, and return it to the pan.
Sprinkle the flour into the pan and stir well until the cooking juices form a smooth paste around the chicken. Gradually add 500 ml water, then pour in the cream. Simmer for 8 to 10 minutes, stirring now and then, until the sauce thickens.
Meanwhile, cook the pasta in a large pot of salted boiling water until just al dente. Drain well.
Stir most of the Parmesan, the Dijon mustard, chopped spinach, and half of the bacon into the sauce. Cook briefly until the spinach wilts, then fold in the drained pasta. Taste and adjust the seasoning if needed.
Spoon the pasta mixture into a large baking dish. Mix the breadcrumbs with the remaining Parmesan and scatter over the top. Finish with the chopped tomatoes and the rest of the bacon.
If baking right away, heat the oven to 400°F / 200°C (180°C fan). Bake for 35 to 40 minutes, until the top is golden and crisp and the sauce is bubbling around the edges.
For a lighter version, you can swap part of the double cream for heavy cream or half-and-half, although the sauce will be slightly less rich. Assemble the pasta bake up to 2 months ahead and freeze before baking; thaw overnight in the refrigerator before cooking. Do not overcook the pasta before baking, or it can turn soft in the oven.
