Pat the chicken breasts dry using paper towels and sprinkle both sides of the breasts with salt and pepper.
2 boneless, skinless chicken breasts, Kosher salt, freshly ground black pepper
Heat a Dutch oven over medium heat and add the oil. When the oil simmers, add the butter and the chicken breasts. Cook the chicken breasts for 3 minutes or until the pan-side is golden brown.
2 tablespoons vegetable oil, 2 tablespoons unsalted butter
Flip the breasts over and cook for another 2-3 minutes. Transfer the breasts to a plate and set aside.
Add the carrots and celery to the still-hot Dutch oven and, if needed, add 1-2 tablespoons more oil. Cook the vegetables for 3 minutes, stir occasionally. Add the onions and cook for another 3 minutes or until the onion has softened and is translucent. 3 carrots, 1 rib celery, 1 yellow onion
Slowly add the chicken stock, while stirring to deglaze the pan, and add the wine. Stir well. Bring the stock to a boil.
4 cups chicken stock, ¼ cup semi-dry or dry white wine
Add the thyme, nutmeg, mustard, and pasta. Stir well and bring back to a boil. Reduce the heat to medium-low and simmer the soup for about 30 minutes. The pasta should be cooked through and the broth thickened.
1 teaspoons fresh thyme leaves, ¼ teaspoon freshly grated nutmeg, ¾ tablespoon Dijon mustard, ½ pound small shell pasta
While the soup simmers, cut or shred the cooked chicken breasts.
After 30 minutes, turn the heat to medium and add the milk and cut chicken breasts.
2 cups whole milk
Bring the soup to just below boiling and immediately reduce the heat to low. Cook the soup 10 minutes or until it has thickened slightly.
When it is the desired consistency (soup-ish but not stew-ish), add the cheeses and stir until cheese has melted.
½ cup shredded Gruyére cheese, 1 cup shredded Colby Jack cheese, ½ cup shredded Cheddar blend cheese
Season to taste with salt and pepper.
Ladle the soup into bowls and top with one or two Toasted Cheesy Crostini (depending on the size).
Garnish with chopped fresh parsley. Sprinkle lightly with smoked paprika or grated nutmeg. Serve and enjoy!
chopped fresh parsley, smoked paprika or grated nutmeg