High Fiber Granola Bars are packed with flax seed, oats, walnuts, dates, and peanut butter to keep you satisfied through all of those mid-day hunger strikes!  

Pile of granola bars on cooling rack with knife and oats next to it.

This post was originally published in May 2016; the photos and text were updated in April 2020 for clarity. No changes were made to the original recipe.

Are you the kind of person who finds themselves starving and in need of a snack between breakfast and lunch? Or maybe between lunch and dinner… you know, that 3 o’clock witching hour?

Those times when the office candy bowl (or, ahem, your entire kitchen right now during these times) is extra tempting and it’s a battle of willpower because you’ve already eaten five pounds of chocolate this week?

Or even a quick on-the-go vegetarian breakfast recipe that will keep you full through those mid-morning hunger pangs, that you can enjoy in the carpool line, hiking on a trail, or still laying in bed (no judgment here!).

Stack of fiber granola bars on cooling rack.

Have I got the answer for you: make your own fiber bars!

These homemade granola bars are going to change the way you breakfast and snack and get through being stuck at home and wanting to eat ALL THE THINGS.

They’re filling, satisfying, and are healthy enough that you’ll feel great about noshing them down.


The beauty of these homemade fiber bars is that they are so easy to make. Like, really. Which is fantastic news considering they’re going to be on repeat weekly. Or, er, daily if you’re safe at home with the family.

First, line a square baking dish with parchment paper. This isn’t required however, it makes it easy to remove the bars in order to cut them and then wrap them individually for on-the-go convenience.

Another perk of being safe at home? You could eat them straight from the pan if you wanted, too!

Side by side photos of peanut butter, honey, and coconut oil in bowl and then melted.

Next up: use a microwavable bowl to melt the peanut butter, honey, and coconut oil together. This makes it super easy to mix together with the other ingredients. Speaking of…

Grab your food processor to blend together flax seeds, dates, and walnuts until they form a coarse mixture. You can adjust based on personal preference, too, for how much texture you’d like in the bars.

Before and after photos of food processor with dates, walnuts, and flax seeds whole and chopped.

The final step: stir together the warmed peanut butter mixture, the date and walnut mixture, and the oats in the bowl until combined. Press the mix into your prepared baking pan and stick in the fridge until they’re set.

Bowl of oats, peanut butter, and chopped date mixture.
Before and after of mixed granola bars in bowl and then pressed into a baking pan.

How long should they set up in the fridge? I recommend letting the bars set for about 15-20 minutes minimum before eating (really, you can eat immediately if you don’t care about the bar form so much). The longer they set up, the firmer the bars will be.

Sliced granola bars on parchment paper in rows.

Adaptable Ingredients

You can easily customize this recipe to suit the ingredients you have on hand.

Peanut butter can be easily swapped with almond butter – whether it’s what you have on hand or it’s what you prefer. Another nut butter? Why not, whatever healthy fat you prefer can be used.

Dates work well as a binding agent, but you can add in additional dried fruits to mix up the flavors. Readers have tossed in chocolate chips for a sweet addition, too.

Pile of high fiber granola bars on cooling rack.

How to Store Homemade Granola Bars

For easy, on-the-go consumption of a granola bar, wrap them individually either in Bee’s Wrap, a Stasher bag, or parchment/wax paper with a little tape.

Now, we have two ways to go from here: the fridge, or the freezer.

Since these granola bars are no-bake granola bars, they do have a slightly softer texture than what you may traditionally be used to. I highly recommend keeping them stored in the fridge until you’re ready to eat.

The freezer is a great option to store them longer than a week and have them available whenever you might need a breakfast bar or snack.

If you’re going to have a bar for a satisfying mid-morning snack, store them in the freezer, grab a bar first thing in the morning before heading off to work, and by the time your tummy is grumbling, the bar will be just thawed enough to eat!

Healthy Fiber Bars

Classified under “healthy fiber bar recipe” and “healthy granola bar” and “a balanced way to eat, be satisfied, and eat something delicious”

For the record, I’m not a dietician, so I’m not offering any specific information about what is and what isn’t in these bars. But all these ingredients are on my “let me be healthy!” list.

Sliced granola bars spread on parchment paper next to knife.

Considering the ingredients generally are on lots of “things to eat to be healthy” lists, I’m calling it a win. And fiber in dates? Check. Fiber in walnuts? Check. Fiber in flax seeds? Check.

And I mean, they’re homemade (automatically healthier in my book!) and so easy to make?! You’re never going to need to buy pre-packaged, factory-made mystery-ingredient granola bars for convenience again.  

Take 5-10 minutes out of your meal planning schedule, mix all the ingredients together, and throw in the fridge and you’ll have delicious bars to eat all week long (if they last!).

More Granola Recipes to Love:

pile of granola bars on cooling rack with knife and oats next to it
4.87 (15 ratings)

Get the Recipe High Fiber Granola Bars

Loaded with flax seed, oats, walnuts, dates, and peanut butter, these granola bars will satisfy when the midday hunger strikes!


  • 1/2 cup (129 g) peanut butter, or almond butter
  • 1/4 cup (84.75 g) honey
  • 1 teaspoon (1 teaspoon) coconut oil
  • 2 Tablespoons (2 Tablespoons) flax seed
  • 1 cup (147 g) pitted dates
  • 3/4 cup (87.75 g) walnuts
  • 1 1/4 cup (101.25 g) oats


  • Line an 8×8 or 9×9 baking pan with parchment paper (for easy removal later).
  • In a large microwave safe bowl, add peanut butter, honey, and coconut oil. Microwave for approximately 30-40 seconds and stir to combine.
  • Using a food processor, add flax seeds dates and walnuts (see note 1). Pulse until a course mixture forms.
  • Add the date and walnut mixture to the wet ingredients, add oats, and stir to combine. Press evenly into the prepared baking pan. Refrigerate the bars for at least 15-20 minutes, until the bars are set.
  • Slice the bars into 10 servings and either individually wrap or store in an airtight container in the fridge or freezer (note 2).


Flax seeds: to grind them up more, add them to your food processor or small blender first before adding the additional ingredients.
Storing the Bars: Wrap the bars individually for easy grab-and-go convenience and store them in the fridge, as they are a little softer than baked granola bars. You can also freeze the bars. 
I’ve used both walnuts and pecans in these bars, they both have a good amount of fiber yet a little fat to keep you full, too. Use whichever you prefer.
If you don’t have a food processor, you can chop the nuts and dates by hand and mix in the flax seed whole.
Serving: 1bar, Calories: 260kcal, Carbohydrates: 31.2g, Protein: 7.6g, Fat: 13.7g, Sodium: 61mg, Fiber: 4.9g, Sugar: 19.7g
Did you make this recipe?Please leave a star rating and review in the form below. I appreciate your feedback, and it helps others, too!