How & when to introduce peanut butter to your baby

01When can babies have peanut butter?

For most babies, around 6 months — once they're sitting with support, holding their head steady, showing interest in food, and have tried a few first foods. Babies at higher risk of peanut allergy (severe eczema and/or a known egg allergy) may benefit from starting as early as 4–6 months, often after a conversation with the pediatrician and sometimes testing first.

02Why peanut, and why so early?

Peanut is actually a legume, not a true nut — but it's the single most common serious childhood food allergen, which is why it gets so much attention. The landmark LEAP study found that introducing peanut early to at-risk infants cut the rate of peanut allergy dramatically compared with avoiding it. That finding reshaped guidance worldwide: for most babies, early and regular beats wait and see.

03How to introduce peanut butter safely

1. Use smooth peanut butter (no chunks). Measure about 2 teaspoons.
2. Thin it with 2–3 teaspoons of warm water, breast milk, formula, or stir it into a purée your baby already eats until smooth and runny.
3. Offer a small taste on the tip of a spoon and wait ~10 minutes. No reaction? Offer a bit more.
4. Watch for about 2 hours, earlier in the day, when baby is healthy and you're home.
5. Keep it up. Once tolerated, serve peanut regularly so the protection sticks.

04How much and how often?

Start with a tiny taste on day one. Once your baby tolerates it, a commonly cited target is about 2 teaspoons of smooth peanut butter, 2–3 times a week. Consistency matters more than quantity — the goal is keeping peanut a regular part of the diet, not a single milestone taste.

05What's the best peanut butter for babies?

You don't need anything fancy, but a few things matter:

• Smooth, never chunky. Bits of nut are a choking hazard.
• No added salt or sugar where possible — babies don't need either.
• No xylitol or other sugar substitutes.
• Just peanuts (or peanuts + a little oil) is ideal. A natural, runny peanut butter thins easily.

Prefer to skip the measuring and thinning every time? That's exactly the problem Tiny Acorn is built to solve — one smooth, baby-ready blend that covers peanut and six tree nuts in a single jar. Join the waitlist →

Signs of a peanut reaction

• Mild: a few hives, redness or mild swelling around the mouth, an itchy rash, or some vomiting. Stop and call your pediatrician.
• Severe (call 911): trouble breathing or wheezing, swelling of the lips/tongue/face, repeated vomiting, or a pale, floppy baby.

Frequently asked questions

Keep reading