8 oz dry macaroni noodles Salt 1 1/2 cups shredded sharp cheddar cheese 1 cup sour cream 1 cup cottage cheese 1/2 cup milk 1/2 tsp ground mustard 1/2 tsp garlic powder 1/2 tsp salt 1/4 tsp ground black pepper 1/4 cup butter, melted 1/4 cup Panko bread crumbs 1/4 tsp paprika 1 tbsp chopped green onion