Can Babies Have Peanut Butter? Introducing Peanut Safely in the UK

Yes — babies can have smooth peanut butter (or smooth peanut paste) from around 6 months, once they've started solids and managed a few first foods. Peanut is one of the common allergens, and — like egg — the modern UK approach is to introduce it early and deliberately rather than holding it back.

The one thing that trips parents up is the form. Babies can have peanut in the shape of smooth peanut butter thinned into food. What they absolutely cannot have is whole or chopped nuts — those are a choking hazard for any child under 5. So it's not "no peanuts until later"; it's "yes to smooth peanut butter, no to whole nuts."

Before you start, make sure your baby is genuinely ready for solids. The usual signs of weaning readiness — sitting steadily, good head control, reaching for food and bringing it to the mouth — tend to arrive around 6 months, and solids before then aren't recommended.

This is feeding support, not medical advice. If your baby has severe eczema, an existing food allergy, or you're worried in any way, speak to your GP or health visitor before introducing peanut.

For years, parents were told to delay peanut. That advice has changed. The current UK approach is to introduce peanut early — from around 6 months — because early, regular exposure is associated with a lower risk of developing a peanut allergy. This shift came largely from research (the LEAP study) which found that, in babies at higher risk, introducing peanut early and keeping it in the diet was linked to fewer peanut allergies than avoiding it.

We're describing this qualitatively on purpose: the takeaway for most families is simply that introducing peanut early and keeping it regular is the recommended approach, not something to fear or postpone.

Two principles make it safer and clearer:

• One allergen at a time. Don't introduce peanut on the same day as another new allergen, so you can tell what caused any reaction.
• Keep it in the diet. Once your baby tolerates peanut, offer it regularly — a couple of times a week. Ongoing exposure is the point; a single taste and then months off isn't the goal.

For the bigger picture on introducing the whole allergen group, see our guide to allergen introduction for babies.

Higher-risk babies: if your baby has moderate-to-severe eczema, or an existing egg allergy, they're at higher risk of peanut allergy. Talk to your GP or health visitor before introducing peanut — they may advise a specific approach or timing.

This is the non-negotiable safety rule, so it gets its own section.

• Use smooth peanut butter only. Avoid chunky or crunchy varieties — the nut pieces are a choking risk.
• Never give whole or chopped nuts to a child under 5. Whole nuts are a serious choking hazard for young children.
• Never offer a thick, sticky spoonful of neat peanut butter. A gluey lump of peanut butter can stick to the roof of the mouth and become a choking risk. Always thin it down.
• Choose an unsweetened, no-salt-added smooth peanut butter where you can — babies don't need added salt or sugar.

Sit your baby upright and fully supervised for every meal, and never leave them alone with food. If you'd like to feel more confident telling normal gagging from a real choking episode, our guide on choking versus gagging during weaning is worth a read before you start.

The trick is to make peanut butter loose and spreadable, never a solid clump. Here are safe ways to do it as your baby grows.

Age	How to serve smooth peanut butter
From 6 months	A small amount thinned with warm water, breast milk or formula and stirred into porridge, baby cereal or a fruit/veg purée; or a thin smear on a soft strip of toast
7–9 months	Thin scrape on toast fingers or soft pancake strips; stirred into yoghurt or mashed banana; blended into smoothie-style purées
9–12 months+	Slightly more as part of family meals — a thin layer in a wrap, mixed into satay-style sauces (still smooth, never whole nuts)

For the very first taste, offer a small amount, watch your baby over the next couple of hours, and if there's no reaction, you can offer a little more next time and then keep it regular. Pick a day when your baby is well, you're at home, and it's earlier in the day so you can keep an eye on them.

As always: no whole nuts, no chunky peanut butter, no thick neat spoonfuls, and no added salt.

Most babies take to peanut with no trouble. But because it's a common allergen, know the signs before you begin.

Mild-to-moderate reaction signs, usually within minutes to a couple of hours, can include:

• Redness or an itchy, raised rash (hives), often around the mouth or where peanut touched the skin
• Swelling of the lips, face or around the eyes
• Sneezing, itchy or runny nose, watery eyes
• Being sick, tummy pain or loose stools

If your baby has a mild reaction, stop giving peanut and speak to your GP before offering it again — they can advise on next steps and any testing.

Call 999 immediately and say "anaphylaxis" if you see any signs of a severe allergic reaction:

• Swollen tongue, or swelling in the mouth or throat
• Difficulty breathing, noisy or wheezy breathing, or a persistent cough
• Suddenly going very pale, floppy or unresponsive
• A hoarse voice or trouble swallowing

Anaphylaxis is a medical emergency — don't wait to see if it passes. Call 999 straight away.

From around 6 months, smooth peanut butter is a positively helpful early food: introducing peanut early and keeping it regular is associated with a lower chance of peanut allergy. Thin it into porridge or purée, or smear it thinly on soft toast — one allergen at a time, small amount first, then kept in the diet a couple of times a week.

Never give whole or chopped nuts under 5, never chunky peanut butter, and never a thick neat spoonful. Serve upright and supervised, skip added salt, and if your baby has severe eczema or an egg allergy, check with your GP first. Know your reaction signs, including the 999 anaphylaxis flags.

Want a calm, structured walk-through of first foods and allergens? Our Starting Solids course (£67) covers readiness, allergen introduction and safe serving from start to finish. You might also find our guides on introducing allergens and baby-led weaning versus purées useful.