Bake-off is a format. Competition baking has become one of the most durable formats in television and one of the most reliable ways to get a community to show up for an event. Local shows, school fundraisers, county fairs, and corporate charity days all run them.
The word also has a second life in technology, where a bake-off is a head-to-head comparison of competing products or standards. Engineering organisations run them formally, and the term is standard in that context.
The food reading is the commercial one. It fits a competition platform, an events organiser, a baking community, a recipe site, or a charity fundraising resource. The .org suits fundraising and community events particularly well, since that’s where most bake-offs actually happen.
One compound word, seven letters, universally understood, and it carries an immediate warmth that food branding depends on.
The name is listed for sale. Enquiries welcome.