Sorry parents, there’s no solid research showing that butter improves infant sleep.
Here’s how Dr. Klunk puts it: “I would think of it like this, feeding a baby butter is going to help them sleep better if it provides something they are otherwise missing in the same way that meeting any of their needs makes them feel better. In the case of butter, it may be that they needed a fuller tummy at bedtime or something that would stick around longer and keep them feeling full and content, but just like we don’t reach for a stick of butter when we need a snack, there are probably better ways to provide what your baby needs.”
In other words, if your baby seems to sleep better after butter, it may just mean they needed a bit more food before bed—not that butter itself has sleep-inducing properties.
It’s also worth remembering that baby sleep is notoriously unpredictable. Developmental leaps, teething, growth spurts, and temperament all play a role. Correlation (butter night = better sleep) doesn’t necessarily equal causation.
If You’re Going to Try It, How Much Is Reasonable?
Most expert guidelines, including the American Academy of Pediatrics, recommend against restricting fat and cholesterol for children under two. Still, moderation matters.
Conlon suggests about ¼ teaspoon per serving for babies starting solids around six months, gradually increasing up to about 1 tablespoon for toddlers 12 to 24 months. Keep in mind that older infants and toddlers only need about 2 to 2.5 tablespoons of total fat per day from all sources combined—including breast milk or formula.
As for the type of butter? All three experts recommend choosing the unsalted, pasteurized kind to minimize sodium intake and reduce the risk of harmful bacteria. Babies with dairy allergies should avoid butter unless advised otherwise by their healthcare provider.
Better Fat Sources to Focus On
While butter is fine in moderation, parents should prioritize fats from whole foods, say experts.
A few high-nutrient options Conlon recommends include avocado, olive oil, nut butters (with allergy precautions), chia and flax seeds, eggs, and low-mercury fish like salmon.
The Bottom Line on the Butter Trend
Feeding your baby butter isn’t necessarily bad, provided that it’s done in moderation so that it doesn’t displace other crucial nutrients babies need for healthy growth. It can also be helpful “to boost calories for slow gainers or to make vegetables more palatable for pickier eaters,” says Conlon. “But it works best as an added ingredient, not a main course,” she adds.
Despite the social media hype, letting your kid chow down on a stick of butter before bedtime is unlikely to make them sleep through the night.
Thomson sums it up best: “Focus on feeding skills, not food hacks. Social media trends can oversimplify or even contradict nutrition science. Dietitians and pediatricians emphasize the importance of responsive feeding, texture progression, and nutrient diversity. Butter in small amounts is safe, but it’s not a superfood or a sleep hack.”
For bleary-eyed parents scrolling at midnight, the promise of a buttery fix is tempting. But as much as we’d love a stick-of-butter shortcut, experts say you won’t find a good night’s slumber in the dairy aisle.