Hearty Lemon Chicken Soup is a creamy soup with delicious lemon undertones and filled with seasoned chicken chunks, vegetables and country-style egg noodles.
In small saucepan, combine 2 cups chicken broth, 1 cup lemon juice, and ½ cup butter. Bring to a boil, and let reduce to 1 cup. It takes about 45 minutes. After reduced, can cool and store in fridge until ready to make soup.
While lemon mixture is reducing, place frozen (or unfrozen) chicken breasts into Instant Pot, with 1 cup water and 2 Tablespoons freeze-dried poultry seasoning. Set to pressure cook on high for 25 minutes if frozen (12 minutes if unfrozen). Quick release. Remove breasts and cut into cubes and small pieces. Reserve chicken broth for soup.
When reduced lemon mixture is ready, mix ½ cup flour with 1 cup cold water until smooth. Add to medium saucepan, plus ¾ cup of the lemon mixture (reserving ¼ cup of mixture until later as needed) and 2 cups heavy cream. Bring to almost a simmer, constantly stirring with whisk, until thickened. Set aside.
Add onion, carrots, celery and mushrooms to a large pot with reserved chicken broth and other chicken broth to equal a total of 5 cups. Bring to a boil and then add pasta. Cook covered until pasta is al dente, about 15 minutes.
Add thickened lemon mixture and 2-3 cups cooked chicken to vegetables and pasta. Add poultry seasoning, salt and pepper. Add reserved ¼ cup lemon mixture according to desired lemon flavor. Stir and heat through, but don’t boil.