In case you didn’t already know, the key to any good get-together isn’t the music or the decorations—it's the melty, gooey cheese dips that can feed a crowd! Hosting a game day watch party?

Melty, founded in 2012 in Utah, has gradually grown to seven locations (four in Utah and one each in California, Tennessee and Massachusetts). Dedham is its first in the Northeast. Late last month ...