For the chicken
01 -
4 boneless skinless chicken breasts, about 2 lb (900 g)
02 -
1 teaspoon kosher salt
03 -
1/2 teaspoon black pepper
04 -
1 teaspoon Italian seasoning
05 -
1/2 teaspoon onion powder
06 -
1 tablespoon olive oil
For the garlic mushrooms
07 -
4 tablespoons (56 g) unsalted butter
08 -
12 oz (340 g) cremini mushrooms, sliced
09 -
5 cloves garlic, minced
10 -
2 tablespoons chopped fresh parsley, divided
For the cheese sauce
11 -
3/4 cup (180 ml) low-sodium chicken broth
12 -
1 cup (240 ml) half-and-half or heavy cream
13 -
1 teaspoon Dijon mustard
14 -
1/2 cup (50 g) grated parmesan cheese, divided
15 -
1 cup (115 g) shredded low-moisture mozzarella cheese