One Pot Skinny Creamy Garlic Noodles

butter (divided)

garlic (minced)

chicken broth ((3 3/4 cups))

milk (add more if needed)

linguini

kosher salt and black pepper (to taste)

basil

Parmesan cheese

broccoli (optional)

chicken breasts (grilled and cut into strips (optional. See notes above on how to make chicken part of the "one-pot" meal if you don't want to grill))