Just turned 3. An average day would be...
Breakfast - either porridge, weetabix, shreddies or rice crispies, normally a really big helping (she doesn't eat breakfast until she's been awake for a good hour or so)
Probably a small snack in the morning, like a piece of fruit or some crackers/oatcakes
Lunch - a slice of bread with some ham and cucumber/veg, and a yoghurt for pudding. Rarely her biggest meal of the day.
Sometimes a small amount of warm milk before the nap - depends on how close to lunch the nap is, if it's been over an hour or so then I'll give her milk to help her sleep. Again, sometimes a snack when she wakes up, generally small.
Dinner will be something like chilli, pasta and veg, stew, spag bol, fish fingers and veg etc. Tends to be her biggest meal of the day if she's not had much of a snack. Doesn't always get pudding as she's happy to eat so much main meal.
5-6oz warm milk before bed. She just drinks throughout the day from several beakers around the house so I have no idea how much she has actually drinks, other than she has regular wet nappies. Try and avoid anything but water and milk.