Creamy Homemade Chicken Stew

1 cup lowfat evaporated milk

¼ cup all-purpose flour

1 ½ pounds chicken leg meat

¾ pound small fresh button mushrooms

2 potatoes

peeled and cubed

2 cups pearl onions

2 large carrots

coarsely chopped

2 ¼ cups frozen green peas

thawed

1 cup chicken broth

½ teaspoon salt

¼ teaspoon ground black pepper

½ teaspoon dried marjoram

¼ teaspoon dried rosemary

¼ cup chopped fresh parsley