Cook the egg noodles according to package directions. Drain and set aside.
While the noodles are cooking, melt 1 tablespoon of butter in a large skillet over medium heat. Add the chicken, season with salt and pepper, and cook until the chicken is cooked through, about 7 to 8 minutes. Remove the chicken from the pan and set aside.
Melt the remaining 2 tablespoons of butter, add the onion and the mushrooms and cook until the onions are translucent and the mushrooms are browned and tender, about 5 minutes.
Sprinkle in the flour and cook, stirring, about 1 to 2 minutes.
Return the cooked chicken to the pan, add the worcestershire sauce and pour in the chicken broth. Cook, stirring occasionally, until the sauce has thickened, about 5 to 10 minutes.
Remove from heat and stir in the sour cream.
Serve over egg noodles.
Notes
Calories are automatically generated. For best results calculate based on your exact ingredients.Recipe Notes:
Stir the sour cream in after removing the pan from the heat to keep the sauce smooth and prevent curdling.
Chicken thighs can be used instead of chicken breasts for a richer, more tender result.
Use full-fat sour cream for the creamiest sauce.
Leftovers reheat well with a small splash of chicken broth to loosen the sauce.