oatmeal. delicous, filling, and will help with milk supply. only use old fashioned. not the stuff in packets.
there are recipes out there for 'lactation cookies.' I had friends that made them, they said they were delicious, filling, and helped with supply issues.

I seemed to be addicted to almonds when i was breast feeding.

Pita chips (whole wheat) and hummus! my favorite go-to breastfeeding snack. I also like celery with peanut butter and raisins, if i'm feeling it.

I love to make a healthy quesadilla with one whole wheat tortilla, a handful of spinach, and a sprinkle of sunflower seeds, and low moisture organic mozzarella (I know not the traditional cheese of a quesadilla haha). It was savory and filling, I would just reheat it in the microwave at work.

quesadilla mama again, I forgot, I would also add a bit of whole pinto beans to the quesadilla as well, protein and creaminess yum!

Hummus was my go-to. Greek yogurt is also a great suggestion. And sesame noodles! A small portion is a perfect filling snack.

I wish I could still eat like this! But I'm no longer directly sustaining a second human so I have to snack much lighter.

Cashews are also supposed to be good for milk supply - i ate them as snacks when I was pumping, I think they helped. Also second the Greek yogurt, or kefir and lots and lots of water. Mothers milk tea also worked for me. I drank tons of it iced with lemon and honey - tasted better to me that way.

Um, cookies? Anyone? And a big glass of milk? It's great to be virtuous and eat beans and cooked chicken and avocado, but I really, really found that I needed the fat and sugar in cookies. Health 'em up with ingredients like oatmeal, peanut butter, and blackstrap molasses (vitamins! Iron!) I also had a pretty serious kale chip fetish, with lots of olive oil and sea salt. Again, lots of vitamins and iron.

I'm with lasomnambule, I need something kind of fatty or greasy when im pumping at work all day. Oatmeal in the morning at work is great (I just use instant) but come the afternoon, I want/need something not quite the healthiest out there.

I'm with Lasomnambule... While it might not be the MOST healthy, I HAD to have a cookie and a huge glass of milk every day around 3pm... it was my go to snack. Other than that, I also did nuts or smeared avocado on toast.

I recently brought some deviled eggs to a new momma friend — nice shot of protein, easily eaten with one hand. Those that weren't inhaled upon delivery made for good snacks.

Peanut butter and jam on whole grain toast? That's always my recommendation to people who complain of the hungries mid-morning. Almost everyone loves pb&j and it satisfies the sweet tooth that many people have at breakfast time (I personally can't eat avocado or anything salty for breakfast, though I love salty things for lunch). And if you use natural, unsweetened pb (I prefer Smucker's chunky natural), it seems to satisfy longer than conventional creamy pb.

Leftover whole grain pancakes (corn or buckwheat are favorites of mine) toasted and smeared with whole-fruit jam and dolloped liberally with whole milk yogurt is another delicious way to start the day. And it's a little more indulgent than almonds or avocado, but not quite so bad as cookies.

Whole grain porridge (wheat berries, oat groats, pearl barley, farro berries, etc.) with maple syrup and some whole milk or whole milk yogurt is also amazing in the mornings. If you make it in the crockpot, it's hands-free and you'll have plenty for leftovers on hectic mornings. Just pop it in the microwave to heat it up.

But yes, to reiterate - fat, protein, and fiber will keep you full for a long time. And they're nutritious too!

Thanks, everyone! Loving these suggestions. I'm getting sick of Greek yogurt, which has been my go-to snack. I'm looking forward to trying these!

Keep up the good work! Pumping at work is hard, I just recently finished. I'm still breastfeeding my 11 month old in the morning and night, but am happy to be done pumping. And yes it always made me sooo hungry!
For a long time I was bringing all sort of snacks - trail mix, cookies, oat bran or oatmeal (rolled oats cooked the microwave) - but eventually I basically just started doubling the size of my lunch and eating one lunch at 10:30 or 11 and a second at 1:30 or 2. Which might not be feasible for everyone but worked for me. So instead of bringing snacks, I'd just bring two sandwiches, two pieces of lasagna, or a gigantic bowl of rice and stirfry to eat in two sittings... somehow this seemed easier to me than trying to find good snacks.

Whole wheat tortilla with almond butter and ground flaxseed - fat and fiber!!

Avocado with cottage cheese is a favorite of mine!
I also make big batches of healthy muffins - carrot applesauce zucchini has been my favorite lately.
Trail mixes with lots of nuts are filling, i love dried apricots in them
Apple slices with oeanut butter
Mini frittatas made in muffin cups, I like to toss in spinach or arugula with feta. So yummy and easy to keep a bunch in the fridge, they are good at any temperature but I like to warm them up in the microwave for a few seconds
Homemade kale, sweet potato, and beet chips for something crunchy

People swear by oatmeal cookies!

Carnitas? It always sounds good to me and is a great source of protein and fat. Best part is that you can't make less than a week's worth at a time.

String cheese.

I always had a stash of non-perishable snacks next to my breastfeeding chair: almonds, dried cherries and cranberries, dried mangoes (Philippine brand, which we've found at Costco, is very high in sugar but very high in deliciousness!), whole-grain crackers, and always a full glass of water. For perishable foods, I love smoothies, hummus and crackers or chips, cut-up cheese, and raw vegetables like carrots, broccoli, and bell peppers. Things that require one hand to eat were especially indispensable.

Also, I recently discovered Nursing Time tea, recommended by my hospital's lactation consultants. The lactation consultants told me that they've seen success in bringing in mamas' milk, upping the supply, and even helping with colicky babies. As for me, I think it just plain tastes good, even without sweetening. Available here: http://www.fairhavenhealth.com/nursing-tea.html

Still nursing my 10 month old and I absolutely see a difference in my milk supply when I consume oats. Whether it be a bowl of oatmeal, oatmeal cookies, granola bars, etc.

I never loved the flavor of Mother's Milk tea, so I would mix it with concentrated cranberry juice (the not-too-sweetened kind.) The herbal flavor gave it a nice little kick and it was easier for me to keep hydrated while I was nursing.
I also second suggestions for super easy-to-eat snacks like string cheese, nuts, and even granola or Luna bars--sometimes, between nursing and pumping, you just want something you can eat with one hand and no fuss. A bottled yogurt smoothie (ideally, not one of those super-sugary ones) would also do the job.
High-water-content fruits and veggies, like grapes, cherry tomatoes, and cucumbers, are also good for snacking and hydration, and you could complement them with a protein-and-fat-rich item; a little snack of blue cheese and grapes sounds like a lovely way to get through a day of pumping, especially after nine months of abstaining from cheeses!

If you're looking for some healthy recipes for your baby (and the family) you check out my blog www.bitesforbabies.com. I try to make my sons's meal and snacks as often as possible...don't know if they suffice for a breastfed baby, but I'm sure there's no difference!