15 Steps to the Best Homemade Chicken Alfredo

Pat 450 g (1 lb) chicken breasts dry with kitchen paper, then slice horizontally into thin, even cutlets about 1.5 cm (1/2 inch) thick. Season both sides generously with 5 g (1 tsp) salt and 2 g (1/2 tsp) black pepper, pressing the seasoning in. Slicing the breasts thinner means they cook through in minutes without drying out. Let the chicken sit at room temperature for 10 minutes while you prep the rest of the ingredients.

Heat 15 ml (1 tbsp) olive oil in a large heavy-based skillet over medium-high heat until shimmering. Add the cutlets in a single layer without crowding the pan and cook for 4-5 minutes per side, until deeply golden and the internal temperature reaches 74°C (165°F). Work in two batches rather than overlapping the chicken, which steams instead of browning. Transfer the chicken to a plate and tent loosely with foil.

Leave the seared chicken to rest for 5 minutes so the juices settle back into the meat instead of spilling out when cut. Slice the cutlets on a slight diagonal into 1 cm (1/2 inch) strips. Keep the pan aside with its browned bits still in it, as that fond adds flavour to the sauce later. Set the sliced chicken aside, loosely covered, until step 11.

Fill a large pot with about 3 litres (12 cups) of water and bring to a rolling boil over high heat. Salt the water generously with 15 g (1 tbsp) salt - it should taste like the sea, since this is the only chance to season the pasta itself. A large volume of water stops the fettuccine strands from clumping together as they cook. Keep the lid off once boiling to maintain a steady, vigorous boil.

Add 340 g (12 oz) dried fettuccine to the boiling water and stir immediately to separate the strands. Cook for 8-9 minutes, about 2 minutes less than the packet instructions suggest, so the pasta finishes cooking gently in the sauce. Before draining, scoop out 120 ml (1/2 cup) of the starchy cooking water and set it aside. Drain the pasta but do not rinse it, since the surface starch helps the sauce cling.

In the same pan used for the chicken, reduce the heat to medium and melt 115 g (1/2 cup) unsalted butter, scraping up any browned bits from the bottom. Add the 3 minced garlic cloves and cook for 30-45 seconds, stirring constantly, until fragrant but not coloured. Garlic burns quickly and turns bitter, so pull the pan off the heat if it starts to darken. This base gives homemade chicken alfredo its rich, savoury backbone.

Slowly pour in 350 ml (1 1/2 cups) heavy cream, whisking constantly as it hits the hot butter to stop it splitting. Bring the mixture to a gentle simmer over medium-low heat - small bubbles around the edge, never a rolling boil. Simmer for 3-4 minutes, stirring often, until the cream has thickened slightly and coats the back of a spoon. High heat at this stage is the number one cause of a broken alfredo sauce, so keep it low and steady.

Take the pan off the heat, then add 100 g (1 cup) finely grated Parmesan a handful at a time, whisking constantly until each addition melts smoothly. Working off the heat stops the cheese proteins from seizing and turning grainy. Once all the Parmesan is incorporated, return the pan to low heat for 1 minute just to warm through. The sauce should look glossy and coat a spoon in a thin, even layer.

Taste the sauce and season with a pinch of nutmeg if using, plus extra salt and black pepper to taste - remember Parmesan is salty, so add salt sparingly. If the sauce looks thicker than double cream, whisk in the reserved pasta water 30 ml (2 tbsp) at a time until it loosens to a silky, pourable consistency. The starch in the pasta water also helps the sauce grip the noodles rather than pooling at the bottom of the bowl. Keep the sauce on low heat while you finish the dish.

Add the drained fettuccine directly into the pan with the alfredo sauce, using tongs to lift and turn the pasta so every strand gets coated. Toss for 1-2 minutes over low heat, letting the pasta finish cooking gently in the sauce. If the sauce tightens up, splash in a little more reserved pasta water. The pasta should look glossy, not soupy, with the sauce clinging to it rather than pooling underneath.

Nestle the sliced chicken and any resting juices back into the pan with the sauced pasta. Gently fold everything together with tongs for about 1 minute, just until the chicken is warmed through. Avoid vigorous stirring, which can break up the delicate pasta strands and the sauce alike. The finished dish should look creamy and cohesive, with visible flecks of black pepper and Parmesan.

Run a spoon through the sauce - it should coat the pasta in a thin, even layer without pooling or looking greasy. If it has thickened too much as it sits, stir in another 15-30 ml (1-2 tbsp) reserved pasta water off the heat. If it looks thin or slightly split, whisk in a further 15 g (1 tbsp) grated Parmesan off the heat to bring it back together. This final check is what separates a restaurant-style sauce from a gluey or watery one.

Using tongs, twirl generous portions of the fettuccine into warmed shallow bowls, spooning any extra sauce from the pan over the top. Work quickly, since alfredo sauce firms up fast once it stops moving over heat. Divide the chicken evenly so each bowl gets a similar amount of both pasta and meat.

Sprinkle each bowl with a little extra finely grated Parmesan, plus a pinch of the chopped parsley for a pop of colour against the pale sauce. Finish with a final crack of black pepper over the top. These small touches take seconds but make homemade chicken alfredo look and taste like a restaurant plate.

Bring the bowls to the table straight away, while the sauce is still warm, glossy and clinging to the pasta. Alfredo sauce continues to thicken as it cools, so serving promptly keeps the texture at its best. Pass extra grated Parmesan and black pepper at the table for anyone who wants more. Refrigerate any leftovers within two hours to store them safely for later.