Heat the olive oil in a large Dutch oven over medium heat. Add the chicken and cook for 5 to 6 minutes, stirring occasionally, until lightly browned.
Transfer the chicken to a plate.
Add the onion and mushrooms to the Dutch oven. Cook for 7 to 8 minutes, stirring occasionally, until the mushrooms release their moisture and begin to brown.
Stir in the garlic, thyme, rosemary, salt, and black pepper. Cook for 30 seconds.
Sprinkle the flour over the mushrooms and stir continuously for 1 minute.
Slowly pour in the chicken broth, stirring to prevent lumps.
Add the cannellini beans and return the chicken to the Dutch oven. Bring the soup to a boil.
Reduce the heat to low, cover, and simmer for 15 minutes, or until the chicken reaches an internal temperature of 165°F.
Stir in the milk and simmer for 2 to 3 minutes.
Place the Greek yogurt in a small bowl. Gradually whisk in about ½ cup of hot broth until smooth.
Remove the Dutch oven from the heat and stir in the yogurt mixture.
Add the Parmesan cheese and stir until melted.
Stir in the fresh parsley and serve.
Notes
Estimated WW Points: 2 (Check official WW app for exact points.
Tips and Tricks
Brown the mushrooms - Give the mushrooms enough time to release their moisture and start browning. If the pot seems crowded, cook them a little longer.Prevent curdling - Use room-temperature Greek yogurt if possible. Avoid boiling the soup after adding it, since high heat can cause the yogurt to separate.Adjust the thickness - The soup will thicken as it cools. Stir in a little extra chicken broth if you prefer a thinner consistency.
Storing and Reheating
Refrigerator - Cool the soup promptly and store it in an airtight container in the refrigerator for up to 3 to 4 days.Freezer - Freezing is not recommended because the Greek yogurt and milk may separate when thawed.Stovetop - Reheat over medium-low heat, stirring frequently, until the soup reaches 165°F. Avoid prolonged boiling to help maintain the creamy texture.Microwave - Place a serving in a microwave-safe bowl, cover loosely, and heat in short intervals, stirring between each, until it reaches 165°F.