For me (as a pregnant dieter) I have found that toast is the only thing (when I had morning sickness) that made me feel good so I had it all the time
My favourites included:
Though if you are looking for something filling go with something like beans as the fibre keeps you full for ages and then also include some mushrooms, egg etc.
My other favourite with reduced calorie cheddar is welsh rarebit. My hubby makes the perfect one and every now and again I get a craving for it.