Buffalo Chicken Pasta Bake

INGREDIENTS

8 tbsp

butter, divided

1 cup

chopped onion

1 cup

chopped celery

1 cup

chopped carrot

1 tbsp

minced garlic

1 1/2 lb

boneless skinless chicken breasts, cut into 1/2-inch pieces

1/2 tsp

salt

1/2 tsp

ground black pepper

3/4 cup

buffalo wing sauce, divided

1/4 cup

all-purpose flour

1 1/2 cups

milk

1 1/2 cups

chicken broth

4 cups

shredded Colby cheese

2 cups

shredded Monterey Jack cheese

box rigatoni pasta, cooked according to package directions

1 cup

panko (Japanese bread crumbs)

1/2 cup

crumbled blue cheese

3 tbsp

chopped fresh parsley