For more Belize type food -
The Reef
Street vendors - most awesome food I've had - if it smells good it usually is : )
Elvi's
Estelle's or Cannibal's for breakfast - I've become addicted to fry jacks.
Try a snorkel (amazing) & beach bbq - that's more homestyle and very tasty.
BC's on Sunday for BBQ
And as scubalady said - you aren't staying long enough - but long enough to want to come back : )

Time flys - have fun!