Start by adding olive oil to your Instant Pot. Select the sauté function and let the oil heat up. The goal is to get the oil nice and hot before adding the chicken.
Season the chicken breasts with pepper to enhance their flavor. Once the oil is shimmering, carefully add the seasoned chicken to the pot. Brown the chicken for about 2 to 3 minutes on each side until golden brown.
After browning, remove the chicken from the pot and set it aside. This step allows you to deglaze the pot without the chicken getting overcooked.
Add garlic to the pot and cook it for about 1 minute, stirring frequently. You’ll want to inhale that delicious aroma!
Next, pour in water to deglaze the pot. Scrape any browned bits off the bottom with a wooden spoon to prevent the burn message from appearing during cooking.
Once deglazed, return the browned chicken to the pot. Add the broken fettuccine noodles on top, ensuring they’re distributed evenly.
Pour the garlic Alfredo sauce over everything, making sure to cover the noodles. It’s essential that the noodles are submerged for even cooking.
Seal the lid of the Instant Pot, ensuring the valve is in the sealed position. Set the pot to cook on high pressure for 8 minutes.
When the cooking time is up, perform a quick release by carefully turning the valve. I like to cover it with a towel to avoid starchy water spraying everywhere!
After the pressure is released, let the pot sit for 5 to 10 minutes. This will allow the sauce to thicken. During this time, remove the chicken, slice it, and return it to the pot.
Give the mixture a good stir to combine all the flavors before serving. Your Instant Pot Chicken Alfredo is ready to be enjoyed!