Steps
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Place the rolled oats in a blender or food processor and pulse until they become a fine powder, similar to the texture of commercial baby cereal. This takes about 30-45 seconds.
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Bring the water (or breast milk or formula) to a gentle simmer in a small saucepan over medium heat. If using breast milk or formula, warm it slowly to avoid scorching.
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Slowly whisk the ground oats into the simmering liquid, stirring constantly to prevent lumps from forming. Reduce the heat to low.
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Cook for 3-5 minutes, whisking frequently, until the cereal thickens to a smooth, porridge-like consistency. It should drip slowly off a spoon for younger babies, or hold its shape slightly for older babies.
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Remove from heat and let cool to a safe temperature. Stir in the mashed banana if using. Test the temperature on the inside of your wrist before serving — it should feel warm, not hot.
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Adjust the thickness by adding more liquid for a thinner cereal or cooking a minute longer for a thicker one. Serve in a shallow bowl with a soft-tipped spoon.
Why It Works
Commercial infant cereals are often fortified with synthetic iron (ferrous sulfate) and contain added sugars or maltodextrin. Whole oats are naturally one of the richest grain sources of iron, containing about 2 mg per quarter-cup serving, along with zinc, magnesium, and phosphorus — minerals critical for a baby’s rapid growth. Oats also provide beta-glucan, a soluble fiber that feeds beneficial gut bacteria and supports gentle, regular digestion. Cooking with breast milk or formula boosts the calorie and nutrient density, while mashed banana adds natural sweetness, potassium, and vitamin B6 without any need for refined sweeteners.
Tips
- Grind a big batch. Pulse 2 cups of oats into flour and store in an airtight jar in the pantry. It keeps for a month and makes mornings effortless — just scoop, cook, and serve.
- Pair with vitamin C for iron absorption. Mix in a tablespoon of mashed strawberries, pureed peaches, or a squeeze of fresh orange juice. Vitamin C dramatically increases the absorption of plant-based iron.
- Start thin, then thicken over time. Begin with a very runny consistency for babies just starting solids at 6 months, and gradually make it thicker as they get used to textures. Always consult your pediatrician before starting solids and when introducing new foods.
