The best Mac and Cheese that you'll ever taste is in Bar Harbor, at the Side Street Cafe on Rodick Street, at least according to the post on Only In Your State

Now I admit, I haven't tried any of their Mac and Cheese, but that's going to have to change. According to their website, they offer their award winning "Jeff's Mac and Cheese" loaded with black beans, ham, onions, and jalapeños; a Half Rack and Mac - A portion of creamy mac and cheese topped with half a rack of our sweet and spicy seasoned, slow cooked Danish baby back ribs and a Create Your Own Mac and Cheese!

The Create Your Own Mac and Cheese is available in Half and Full Servings and includes your choice of any of the 2 of the following: fresh spinach, black bean salsa, shitake mushrooms, onions, tomatoes, kalamata olives, green peppers, jalapenos, artichokes, roasted red peppers, bacon. You can even get gluten free pasta!