Using a 6 qt or larger Instant Pot, select Saute mode and High.: The pot will give off a faint electrical hum and the display will tell you it is heating, which is your cue to proceed. You should notice a shimmer of heat on the inner surface, and if you hold your hand a safe distance above it you can feel the rising warmth. This initial high heat is crucial because it prepares the surface for proper browning, which creates fond that later dissolves into the broth to provide depth. A common mistake is skipping this preheat, which leads to poor browning and a less flavorful base. If your model takes longer to read HOT, be patient and wait until it signals, otherwise oil and butter can burn when added prematurely.
Once it reads HOT, add the oil, add the chicken in one layer and cook on each side until browned, about 3-5 minutes per side. Transfer to a plate, cover with foil, and set aside.: When the olive oil hits the hot pot you will hear a brief sizzle, which tells you the surface is ready. Place the chicken pieces carefully so they do not crowd, you want a single layer for even contact. As each side browns you will see the surface take on golden to deep golden tones and the smell will turn savory and slightly sweet. That aroma is a sign the Maillard reaction is developing flavor. After browning, resting the chicken on a plate tented with foil traps juices so the meat stays moist when you shred it later. Avoid moving the pieces too soon, or you will tear the surface and lose the fond, and don't overcrowd or the chicken will steam instead of brown.
Add butter, melt it and scrape well the bottom of the IP to remove any bits that are stuck.: As the butter melts you will see it foam briefly and then quiet down, releasing a nutty aroma that enhances the aromatics. Use a wooden spoon to drag up the browned bits stuck to the bottom, this deglazing step dissolves those concentrated flavors into the melting fat and prevents the burn warning later when you add liquid. The sound is subtle, a soft scraping, and the visual cue is a cleaner pot surface. A common error is not scraping thoroughly, which leaves stuck-on bits that can trigger a burn notice when liquid is introduced, so take your time here.
Add diced onion and cook stirring for 1 minute, add minced garlic and cook stirring for another minute.: When you add the diced onion you will smell it release a sweet vegetal scent as it hits the hot butter . Stirring constantly for about a minute softens the edges and sweeps up residual fond. Adding the minced garlic after gives a bright, pungent burst that will mellow in seconds into a savory base. The sizzling should be lively but not violent; if the aromatics begin to brown too quickly lower the Saute intensity if your model allows or stir more frequently. Burning these will add bitterness rather than sweetness, so keep the motion steady.
Add the carrots, celery, dried parsley, basil, pepper flakes, salt, and pepper. Stir and cook for 3-5 minutes.: As you toss in the shredded carrots and diced celery the mixture will take on more color and the scent will deepen with vegetal sweetness and herbaceous notes. The dried parsley and basil will begin to rehydrate and perfume the pan, while the pepper flakes add a background warmth. Stirring for several minutes softens the vegetables and melds flavors so the broth later takes on a cohesive profile. Avoid rushing this step; undercooked vegetables can yield harsher raw flavors and uneven texture in the finished soup.
Add the frozen peas and broth. Give it a good stir and add back in the chicken.: When you pour in the low sodium chicken broth you will see steam rise and the pot will shift from sauteing to simmering energy. The frozen sweet peas will loosen their icy sheen and start to thaw, adding color immediately. Stirring releases any remaining browned bits into the liquid and helps distribute aromatics evenly. Nestle the browned chicken back into the pot so it sits submerged in the liquid; this positioning lets it pressure cook evenly. If you skip stirring you risk hot spots or trapped fond that can scorch during pressure build up.
Cover and secure the lid, point the valve to seal. Cook on High Pressure for 7 minutes. When done pressure cooking, do a 10-minute Natural Pressure Release. Release manually the remaining pressure by doing a Quick Release.: You will hear the machine work as it comes to pressure, a faint building hum that eventually quiets once sealed. The 7 minutes at high pressure is enough to tenderize the chicken while keeping it moist. After the cook completes, the 10-minute Natural Pressure Release lets flavors settle and juices redistribute slowly, which keeps the meat succulent. The subsequent quick release expels the remaining steam, allowing you to open the lid safely. A pitfall is skipping the natural release entirely, which can dry out the meat or make liquids spurt; follow timing to protect texture and safety.
Once cooked, take off the lid and select Saute on medium heat. Remove the chicken and add it to a plate. Use two forks to shred it.: Opening the lid you will be greeted by a steam cloud carrying deep, savory notes. Switching to Saute on medium reduces the simmer intensity and prepares the pot for finishing touches. Removing the chicken to shred keeps the dumpling batter from getting mixed with larger meat pieces and allows you to control the texture. Use two forks to gently pull the meat apart; you want flaky strands not mushy bits. Avoid shredding while the meat is too hot to handle safely, but also don’t wait too long, or the juices will stiffen and be harder to redistribute.
Mix the Dumplings ingredients in a bowl until fully combined.: When you stir together the all purpose flour , baking powder , salt , melted butter , and buttermilk the batter should be slightly sticky and cohesive. The texture matters here because over mixing yields tough dumplings while under mixing causes uneven pockets of flour. You will notice a soft, biscuit like scent as the leavening distributes. Resist the urge to beat vigorously; gentle folding preserves air and yields tender dumplings. A frequent slip is adding too much liquid; aim for a scoopable consistency.
Add the cream and sour cream to the pot and stir to combine. Add back the chicken.: Pouring in the heavy cream and sour cream mellows the broth and makes it luxuriously smooth. Stirring incorporates these dairy elements evenly so the soup develops a cohesive, silky mouthfeel. Return the shredded chicken so the meat rewarms and absorbs the creaminess. If the pot is at too high a boil when you add dairy it may separate, so keep the heat moderate and stir steadily for an even emulsion.
Using a small cookie scoop, spoon the dumpling batter into the hot broth. The IP is still on Saute mode.: Dropping portions of batter into the simmering pot will produce a soft sizzle as the outer surface sets and the dumplings float. The scoop ensures uniform size for even cooking and that satisfying visual of little domes bobbing on the surface. Let each dollop land gently; overcrowding the surface can cause dumplings to merge into one irregular mass. An all too common mistake is stirring them immediately, which prevents the tops from forming a skin and ruins the tender interior structure.
Let the dumplings simmer unmoved for about 5 minutes, after which stir gently, and simmer for another 7-10 minutes, or until cooked.: As the dumplings sit you will notice a faint steam and the tops begin to set, while the edges remain delicate. Letting them remain unmoved encourages an airy interior and a lightly tacky exterior. After approximately 5 minutes gently nudge them to ensure even cooking and then allow them to finish in a low simmer for another 7 to 10 minutes. The internal texture should be springy and cooked through without gummy centers. Avoid poking or vigorously stirring too early, which compresses them and makes them dense.
Taste and adjust for salt and pepper.: This is the moment the flavors align, and you should taste the broth to gauge seasoning. The dairy and starches can mute salt, so a final adjustment is often necessary. Add small increments and taste in between to find balance. Over salting is hard to fix, so proceed cautiously and remember that warm soups often taste more seasoned than cooler samples.
If the soup is too thin, in a small bowl combine water and cornstarch until fully dissolved and add the mixture to the pot. Simmer for 3-4 minutes, until thickened. If needed, repeat.: A cornstarch slurry will thicken the broth quickly, creating a glossy finish that clings to dumplings and chicken . Make sure the cornstarch is fully dissolved in cold water before adding to prevent lumps. After incorporating it simmer for a few minutes to cook off the starchy taste and achieve the desired body. Avoid dumping concentrated slurry right into a rolling boil, which can create uneven thickening or telltale pasty pockets.
Serve garnished with fresh parsley.: The final garnish of fresh parsley adds a bright herbal lift and a hint of color against the creamy broth. Sprinkle it just before serving so it retains a fresh visual and a slight fresh chew that contrasts the warm, soft textures below. This small detail rounds the dish and signals a finished bowl. Don’t overdo the garnish, a light scattering is enough to complete the plate.