The best replacement for cereal is oatmeal.

The best alternatives to cereal are rated as following:
★★★★★  oatmeal
★★★  eggs
★★  grain
★★  cereals
★★  oatmeal cereal
★★  oatmeal for babies
★★  milk first
★  toast for breakfast
★  bread
★  rice cereal
★  oatmeal for baby
★  generic cereal
★  waffles
★  salad
★  toast
★  peanut butter sandwich
★  bagel
★  granola
★  barley cereal
★  serial
★  oats
★  oatmeal for infants
  rice
  oatmeal cereal for babies
  oatmeal cereal for infants
  name brand
  name brand cereal
  cheerios
  oat
  rice starch
  sugar cereal
  baby oatmeal
  baby rice
  kashi
  board game
  cream of wheat

Your alternative for cereal is not listed? Suggest!
Speaking about cereal, one probably shouldn't forget about milk.

Other search terms related to cereal and their ratings are:
★★★★★ milk
★★ soy
★ formula
★ yogurt
chocolate milk
You have in mind a companion for cereal and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of cereal in all years. Click on graph for more.
cereal
oatmeal
eggs