Epcot: Boulangerie Patisserie (France Bakery) pithivier (dense roll/almond pastry.) Hubby likes the apple turnovers there. Also Kringla Bakeri (Norway), we like both school bread and the sweet almond soft pretzel.
DHS: Starring Rolls- lots of muffin choices; also Writer's Stop has many bakery treats for a snack credit. Love the carrot cake cookie, but it's filled with cream cheese frosting so need a fridge to keep that overnight. If you're in Future World, check out the bakery counter in Sunshine Seasons/The Land building...there are some yummy choices in there but more dessert-style...which can still be good for breakfast, right?
MK-Main STreet Bakery, in addition to the giant cinnamon rolls, also have giant apple turnovers...very good.
Never found a bakery at AK...seems like the carts have doughnuts & such in the mornings, but we're in a hurry in the a.m.
We've stayed at POFQ & POP -- both had a lot of pastries in the mornings...particularly like the chocolate chip croissant that seems to be available in a lot of places, and we love the 3 piece beignets order at POFQ (but have to get that fresh & eat it hot...does NOT keep overnight. Doesn't even keep much past the time it takes to cool off, lol.) Beach Club, Contemporary and the Poly all had some pastries available in the morning too.