Coffee, dessert and football in Duluth

I think it's the "quiet" part that might make it tough to come up with a good suggestion here. There are a lot of places that have coffee, dessert and football, but anywhere the game is on is not likely to be quiet.

I was hoping for a coffee shop rather than bar atmosphere. Fans and cheering are expected!

Yeah, that's the tricky part. Coffee shops never have televisions. A TV with sports on it just goes completely against what people expect from a coffee shop. There might be a Fox Sports app you could download to a laptop and bring that to a coffee shop to watch the game hoping it won't annoy the other people there. But that almost certainly would annoy someone.