We drove from Madison just for the donuts at Fosdal's. It's not a trek we take often, considering delicious Greenbush Bakery is close by, but we took the drive on a special occasion. Like Matt W. mentioned, it's full of Stoughton residents, and a table of older ladies helped us navigate making a hot chocolate at the coffee bar (which I don't recommend btw) because the person behind the counter would barely talk to us. The service was actually pretty snarky - not downright rude but certainly not warm and friendly.
We picked many delicious desserts from their case - probably too many! - and some rolls. It all looked so good, including the cream puffs, and variety of frosted cookies and donuts, but my absolute favorite is their buttercream-filled frosted donuts. They're clearly diet (haha) and are delicious warmed up the next day too. It makes the drive worth it and, despite the service, I'm rating it 5 stars for taste. Maybe the sour service makes it taste even more sweet!