Breakfast at Tusker House is great! Dh and I usually get the breakfast platter (scrambled eggs, sausage, potatoes) and an order of biscuits and gravy. This is more than enough for both of us.
At Epcot, the Electric Umbrella has breakfast, but be forewarned that the serving sizes are quite small.
We always have to have one breakfast from the Main Street Bakery in MK. The cinnamin rolls are scrumptious!!