Start with 1 to 2 tablespoons of iron-fortified infant cereal per feeding, mixed thin enough to drip easily off a spoon. At 6 months, cereal and other solids are just a supplement to breast milk or formula, not a replacement. Most of your baby’s calories and nutrition will still come from milk for several more months.
How Much Cereal to Start With
For the very first few feedings, offer about 1 tablespoon of single-grain infant cereal mixed with 4 to 5 tablespoons of breast milk, formula, or water. The goal is a very runny, almost soupy consistency. Your baby is learning to move food from the front of the tongue to the back and swallow it, so thick cereal will just frustrate both of you.
Once your baby gets the hang of swallowing (usually within a week or two), you can gradually increase to 2 to 4 tablespoons per feeding and thicken the mixture slightly. There’s no need to rush. Let your baby set the pace. If they’re eagerly opening their mouth for more, offer more. If they turn away or clamp their lips shut after a few bites, the meal is done.
How Often to Offer Cereal Each Day
At 6 months, one to two solid meals a day is plenty. You might offer cereal at one meal and a pureed vegetable or fruit at another, or mix cereal into both. By 7 to 8 months, most babies work up to two or three small meals per day with a snack or two in between, following a general pattern of eating every 2 to 3 hours throughout the day.
Keep in mind that “meals” at this age are small. A few tablespoons of cereal plus a couple tablespoons of pureed fruit counts as a full meal for a 6-month-old. Breast milk or formula feedings should continue on roughly the same schedule as before you introduced solids. Solid food at this stage accounts for only a small fraction of total daily calories.
Breast Milk and Formula Still Come First
At 6 months, breast milk or formula provides the majority of your baby’s nutrition. A helpful rule of thumb: offer a milk feeding before you sit down for cereal. This ensures your baby gets their primary nutrition first and approaches solids as practice rather than as a calorie source. Over the next several months, the balance gradually shifts as your baby eats larger portions and a wider variety of foods.
If you’re using formula, standard iron-fortified formulas (which contain about 12 mg of iron per liter) already cover your baby’s iron needs through the first year. Iron-fortified cereal adds an extra layer of coverage, which is especially important for breastfed babies since breast milk alone doesn’t supply enough iron after about 6 months.
Which Cereal to Choose
Iron-fortified single-grain cereals are the standard first choice. Rice cereal has been the traditional go-to, but oatmeal or barley cereal are equally good options. The FDA has flagged inorganic arsenic levels in rice-based infant cereals, proposing an action level of 100 parts per billion. While many brands have reformulated, rotating between oat, barley, and multigrain cereals is a simple way to reduce any one grain’s exposure and give your baby a broader range of flavors.
Single-grain cereals also make it easier to spot a food sensitivity. If you start with oatmeal cereal alone for a few days before introducing barley, you’ll know which grain is the issue if your baby reacts.
Getting the Consistency Right
Mix 1 to 2 teaspoons of dry cereal with about 4 to 5 tablespoons of liquid for the first attempts. The result should look more like thin soup than oatmeal. As your baby improves at swallowing, use less liquid to create a thicker texture. By the time your baby has been eating cereal for a few weeks, the consistency can resemble soft mashed potatoes.
Use breast milk, formula, or water as the mixing liquid. Breast milk and formula add familiar flavor, which can make the transition easier. Avoid adding sugar, honey (which is unsafe before age 1), or salt.
Readiness Signs to Watch For
Age alone isn’t the only factor. Your baby should show several physical signs before starting cereal:
- Head and neck control: able to hold their head steady while sitting upright with support
- Interest in food: opening their mouth when a spoon approaches or reaching for food on your plate
- Tongue reflex fading: swallowing food instead of pushing it back out with their tongue
- Sitting with support: stable enough in a high chair to eat safely
If your baby consistently pushes cereal out with their tongue, they may need another week or two before trying again. This reflex is normal and simply means the swallowing coordination isn’t quite there yet.
How to Tell When Your Baby Is Done
Babies are surprisingly good at regulating their own intake if you let them lead. According to the CDC, signs that your baby is full include pushing food away, closing their mouth when you offer the spoon, turning their head, or making sounds and hand motions to signal they’re finished. Resist the urge to coax “just one more bite.” Letting your baby stop when they’re satisfied helps build healthy eating habits from the start.
On the flip side, hunger cues at this age include leaning toward the spoon, opening the mouth eagerly, and getting excited when they see food being prepared. Some feedings your baby will eat 4 tablespoons of cereal; others they’ll lose interest after two bites. Both are normal. The amount will vary from meal to meal and day to day, and that’s exactly how it should work.