This is a classic outside of Fenway Park on game day and at countless other public and family events across the Bay State and New England. It's easy, cheap, and a great crowd-pleaser.
The secret to success here is the perfection of each ingredient. The sausages are the star, so they have to be great - cooked through and with crispy skins, the melted fat saved for the important work ahead. The onions and peppers work best cooked separately or serially. Red and green peppers are a great combination but you can do fine with all green peppers or with whatever your garden/CSA share gives you. A proper New England bun is great, but this works well on pasta too.

This is the Beantown classic recipe from Fannie Farmer, used in restaurants and homes across the Bay State and in many parts of New England.