Buffalo Chicken Mac and Cheese (Food Allergy Friendly too!)

Ingredients

butter

elbow macaroni (I used gluten- free elbow noodles)

small onion, finely chopped

stalks celery, finely chopped

rotisserie chicken (flaked with fork)

garlic, minced

hot sauce (preferably Frank's)

all-purpose flour (I used gluten- free flour)

milk

half and half

yellow sharp cheddar cheese cut into cubes

pepper jack cheese cut into cubes

sour cream

crushed cornflakes

crumbled blue cheese