The Best Foods To Help Your Baby Gain Weight

New parents want to do the very best for their little ones and get them a great start in life, but it's not always clear-cut as to what should be on the menu. When baby isn't gaining weight like he or she should be, it can lead to a lot of questions and many sleepless nights.

There are a lot of different reasons a baby might not be thriving quite like their peers, but one solution might be to add some high-calorie foods to their diet. According to SFGate, babies need between 50 to 55 calories per pound of body weight per day for the first 6 months of life, then a little less — around 45 calories per pound per day — after that. It's important to note, though, that's just a guideline, and your baby could have different needs.

Physicians at UpToDate note that slow weight gain in babies might be a sign of an underlying cause, and stress that if you're worried, it's important to talk to your pediatrician. But sometimes, babies just need some extra calories and healthy fats to put on enough weight to keep them in normal range, and if that's the case, here are some healthy foods that will help your baby grow up big and strong. Remember, adding extra calories doesn't mean adding unhealthy foods — just choosing the right healthy ones.

According to Medical Daily, there's a very real danger in introducing your baby to solid foods before they've reached five months old. Studies have shown there's an increased risk of an unhealthy amount of weight gain, and the best time to start adding solids to baby's diet is when they're between five and seven months old.

That said, adding certain high-calorie solid foods is a great way to also add extra calories and help a baby who's developing slowly. The University of Wisconsin says cheeses are a great way to add those extra calories, and notes that not only can cheddar cheese and soft goat cheese be offered as finger foods, but cheeses of all kinds — and cream cheese — can also be used as additives in other foods. Hide a dollop in mashed potatoes or pureed vegetables, or melt over rice or pasta.

There is one word of caution to be added to this one, though. Since dairy is often allergenic, the Australian Society of Clinical Immunology says you should introduce them slowly, and don't add any other potential allergens to your baby's diet along with the cheese. That way, you'll be able to keep an eye out for any potential allergic reaction, and you'll know what caused it.

Avocado might have a reputation as a trendy hipster food, but it's also great for babies who need a little extra help gaining weight. VeryWell Family says they're one of the perfect foods to start baby on, and that goes double for babies who are having a bit of trouble putting on weight.

They'll raise baby's daily calorie intake, along with giving them all kinds of heart-healthy fats and omega-3 fatty acids. That's great, and here's the really neat thing about avocados.

Most of the avocados you'll find in the store are either Florida or California avocados. If you want something filled with the extra goodness baby needs, be sure you get the California variety. That'll have twice the fat and about a third more calories than the Florida version, and that's what you're going to want to give your little one. A single ounce of California avocado has about 50 calories and 4.5 grams of total fat. Win, right? It gets better: the unique texture of the avocado is great for a baby just learning what solid food is all about, and it can be either pureed or cubed for a quick and healthy snack.

Healthline calls cottage cheese "super healthy and nutritious," but it's definitely an acquired taste. It's the texture, right? But here's the thing: that same texture that makes it icky for many adults makes it perfect for baby. That's good news, because the University of Wisconsin calls it one of the best high-calorie foods for infants — especially considering that the only version you'll want to feed them is the full fat version.

But let's talk texture. Different cottage cheeses have different levels of chunkiness, but that can work in your favor if you're having trouble getting the little one to eat. You can puree it to change the texture to something that's more palatable, and since it has such a mild, bland flavor, you can also use it as a calorie-rich base to mix up a little snack you know she's going to like. Add pureed fruits, some avocado, ground seeds, a dash of seasoning, or even some beans. It's versatile enough that you're sure to find a way to get even the pickiest eater to like it, and if they grow up on it, they're more likely to keep eating this delicious cheese even after they're old enough to make decisions for themselves.

The University of Wisconsin says that nuts and nut butters are both excellent foods to give a baby to help boost weight gain, but there are a ton of disclaimers that come with this one.

Parents says that while there are plenty of nuts and nut butters — not just the peanut variety — that are great for a growing infant, you need to be careful about how you introduce them. That means never giving them whole nuts or a spoonful of nut butter. Both of those are choking hazards, so what should you do instead?

You can start by mixing a teaspoon of nut butter into something like applesauce or yogurt, and just making sure the texture has changed and the stickiness is gone. You could also use it as an ingredient in things like pancakes, waffles, and muffins, or you could even get more creative. If your little one likes pasta and noodles, replace the regular butter with nut butters, toss to coat, and serve it up for a tasty treat. It's also well suited to adding to a stew or gravy to give those soft veggies a completely different flavor, and not only will you be helping your baby's physical development, but you'll be teaching them to appreciate new flavors, too.

And, as with any allergen, introduce nuts slowly, separately, and watch for any reaction. Though nuts are a common allergy, recent research suggests that introducing them early and can reduce the risks of an allergy developing.

Not all cereals are created equal, that's almost painfully obvious during any trip down the cereal aisle. While adults pretty much have to choose between getting something that's delicious and unhealthy or bland and healthy, the good news is that it's much easier when it comes to picking out something to help encourage weight gain in your baby.

According to the Benioff Children's Hospital in San Francisco, iron-fortified baby cereals can be a great way to get extra calories and nutrition into your little one's diet.

If having a picky eater is one of the biggest problems you're facing, there's good news: this is another option that you can prepare in a number of ways, and hopefully, you'll find something that your baby likes. If you're having trouble getting them to transition from breast milk to solid food, mixing cereal with breast milk can be a great way to make the switch easier on them. You can also add a teaspoon or so to other foods that they might already like. Add it to yogurt, pureed fruit, veggies or meat, or even mix it in with eggs.

When you're an adult, you're more likely to try to lose weight than gain it. Oil and butter are on the list of things to stay away from, but according to the Cincinnati Children's Hospital, a bit of butter or a dash of some healthy oils can help your baby get much-needed calories.

Oils and butter both have the advantage of being a calorie-heavy topping, which means it's easy to beef up what your baby is already eating with just a little bit of either butter or oil. Put a teaspoon of butter — dairy or soy-based — on your baby's vegetables, pasta, or mashed potatoes, and you can use oil in much the same way.

Choose a healthy oil, like olive or safflower, and use a teaspoon in pasta or on toast. You can also opt for getting out your baking pans, too, and making some healthy, butter-filled muffins, pancakes, or soft snack bars. The bonus to those? You can snack on them, too.