Raspberry Chia Seed Jam Oat Crumble Squares (Vegan + Gluten-Free)

by Angela (Oh She Glows) on September 9, 2014


A blog reader recently emailed me hoping to see a gluten-free version of an oldie but goodie blog recipe – the popular Healthy Strawberry Oat Bars from way back in 2010. There’s something about this time of the year that makes me crave jam-filled oat crumble squares (or really, any kind of baked good, who am I fooling!), so she didn’t need to twist my arm. Not only is this version gluten-free, but it uses coconut oil instead of vegan butter (reduced by about half!), and showcases a new and improved crispy topping. The topping gets crunchy and golden, almost like a granola. Wowzers. My Raspberry Chia Seed Jam recipe was used for a reduced sugar option, but you can use any store-bought or homemade jam you see fit. The beauty of the oat square is that you can change up the flavour significantly just by swapping out different flavours of jam. I think a peach version would be nice too. I made a cinnamon peach chia seed jam a few weeks ago and it was delicious!

Joanna, this one is for you, and anyone who appreciates a classic jam + oat combo! These are healthy enough to start your day with, and delicious enough for an end of the night treat.


4.8 from 61 reviews

Raspberry Oat Crumble Squares

Vegan, gluten-free, soy-free


Reminiscent of a Nutri-Grain bar, these squares are vegan, gluten-free, and filled with a delectable raspberry chia seed jam. They require a good period of cooling before they are ready to be sliced—otherwise they may crumble a bit, as they’re very delicate while warm. Feel free to use 1 cup of your favourite store-bought jam in place of the chia seed jam if you are tight on time; this recipe comes together so fast if using store-bought jam (or previously made and cooled chia seed jam)! Oat squares adapted from my Healthy Strawberry Oat Bars

12 squares
Prep time
Cook time
Chill time
1 hour


Raspberry Chia Seed Jam (or 1 cup store-bought jam):
  • 3 cups (350 g) frozen or fresh raspberries
  • 3 tablespoons (45 mL) pure maple syrup, or to taste
  • 2 tablespoons (20 g) chia seeds
  • 1/2 teaspoon (2.5 mL) pure vanilla extract
For the squares:
  • 1 tablespoon (10 g) chia seeds
  • 1/4 cup (60 mL) water
  • 1/3 cup (80 mL) coconut oil, melted
  • 1/4 cup (60 mL) pure maple syrup
  • 2 tablespoons (30 mL) brown rice syrup
  • 1 teaspoon (5 mL) pure vanilla extract
  • 2 1/2 cups (250 g) gluten-free rolled oats
  • 1/2 cup (68 g) gluten-free oat flour
  • 1 cup (100 g) almond flour (not almond meal)
  • 1/2 teaspoon baking soda
  • 1/2 teaspoon fine sea salt


  1. Preheat oven to 350°F (180°C) and line an 8-inch square pan with parchment paper (with overhang so it’s easy to lift the slab out later).
  2. For the jam: In a medium pot, stir together the raspberries, maple syrup, and chia seeds until combined. Bring to a low boil and reduce heat to medium-low. Simmer, uncovered, for about 10 to 15 minutes, stirring frequently, until the raspberries break down and the mixture thickens slightly. Remove from heat and stir in the vanilla. Transfer the mixture to a bowl and into the freezer for about 20 to 30 minutes, to hasten the cooling process.
  3. For the oat squares: In a small mug, mix together the chia seeds and water to make a chia egg. Set aside for a few minutes until thickened.
  4. In a large bowl, stir together the melted oil, maple syrup, brown rice syrup, and vanilla. When the chia egg has thickened, stir that in, too.
  5. One by one, stir in the rolled oats, oat flour, almond flour, baking soda, and salt until the there are no dry patches left. The dough will seem too dry at first, but if you keep mixing, it’ll eventually come together!  
  6. Set aside 1 packed cup of dough for the crumble topping.
  7. Spoon the remaining dough into the prepared pan. Place a piece of parchment paper on top of the dough and press down to spread the dough out evenly, until it covers the entire base. Or, in lieu of parchment paper, simply use lightly wet hands to press the dough down.
  8. When the chia jam has thickened and cooled, pour all of it (about 1 cup) on top of the oat mixture and spread it out evenly. If using store-bought jam instead, spread on 1 cup.
  9. Crumble the remaining cup of dough over the jam layer.
  10. Bake uncovered for 25 to 30 minutes, until the topping is semi-firm to the touch.
  11. Place the pan directly on a cooling rack for 20 to 30 minutes, and then place it in the fridge until completely cool (about 30 more minutes). Slide a knife around the edges. Carefully lift out the slab and slice into squares.
  12. Store any leftover squares in a sealed container in the fridge for up to 1 week, or in the freezer for up to 6 weeks.

Nutrition Information

Serving Size 1 of 12 squares | Calories 270 calories | Total Fat 14 grams
Saturated Fat 6 grams | Sodium 150 milligrams | Total Carbohydrates 34 grams
Fiber 6 grams | Sugar 10 grams | Protein 6 grams

Nutrition info is based on 12 servings.
* Nutrition data is approximate and is for informational purposes only.


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{ 23 comments… read them below or add one }

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Love Your Oven! November 7, 2016 at 6:45 am
Recipe Rating:

Your recipes are really amazing! At your blog, there are recipes for every taste. Your Raspberry Chia Seed Jam Oat Crumble Squares are perfect for Thanksgiving. Thank you for inspiring us.


Errign November 7, 2016 at 8:21 pm

Hi Angela,

I want to make some homemade nutrigrain bar/cereal bar style treats for my 1 year old so we have an easy snack or grab n go breakfast. I try to limit his sugar, so do you think if I reduced the sugar a bit and increased the amount of the oat crumble, it may work to create a jam “filled” bar? Thanks!


Stephanie November 26, 2016 at 10:30 pm

Can the bars be frozen? Thank you


Angela Liddon December 16, 2016 at 2:15 pm

Hi Stephanie, Yes—leftover bars can be stored in either the freezer or the fridge. :)


Sarah T December 7, 2016 at 12:08 pm

I made 4 jars of the jam already and LOVE them! Question, could I can the jam? Do you think it would work out well?


Dondon March 16, 2017 at 3:09 pm

I’ve made these 4 times now and they’re always a smash! Added choc chips this time :D thanks for sharing, peace


Chelsea June 18, 2017 at 9:21 pm

What can you use in place of the brown rice syrup? Or can it just be omitted?


Angela Liddon June 27, 2017 at 1:29 pm

Hey Chelsea, the brown rice syrup acts as a binding agent in this recipe, so I wouldn’t recommend swapping it out unless you are okay with some potentially crumbly squares. You could try substituting it with honey, but the bars may be a bit on the crumbly side as honey isn’t quite as sticky as brown rice syrup. If you decide to experiment, please let us know how it goes! :)


Taryn July 10, 2017 at 11:17 am

I’m just wondering if it’s possible to “can” the raspberry chia seed jam?


Angela Liddon July 21, 2017 at 12:41 pm

Hi Taryn, I haven’t tried canning this myself, so I’m not sure. But, as another option, I do know the chia seed jam will keep in an airtight container in the freezer for 1 to 2 months. Hope that helps a little!


Tara September 1, 2017 at 7:37 pm
Recipe Rating:

These turned out nicely. My husband likes that they’re not too sweet. Thanks for the recipe!We had a bumper crop of backyard raspberries this year!


Nicole Ashley September 9, 2017 at 12:53 am
Recipe Rating:

I made a peach version of these bars. I substituted the brown rice syrup with molasses and the oil for about a table spoon of mashed banana. I sprinkled monk fruit and cinnamon on top to finish. As others mentioned, these bars were not too sweet and very satisfying.


Angela Liddon September 11, 2017 at 11:28 am

Thanks for sharing, Nicole! A peach version of these sounds amazing!! :)


Andy November 25, 2017 at 6:11 pm

I would like to use all purpose flour instead of almond and oat flour and just wanted to know if anyone is familiar with the ratio. Is it simply 1:1?


Angela (Oh She Glows) November 26, 2017 at 8:16 am

Hey Andy, I would suggest adding the all-purpose flour a bit at a time to make sure that you don’t add too much and dry out the dough. Since this recipe has almond flour in it it’s a bit harder to tweak since it’s a high fat flour and can behave a bit differently than “normal” flours. Please let me know if you try anything out!


Andy November 26, 2017 at 10:36 am

Ok, thanks :)


Kimberly January 16, 2018 at 12:46 pm

They look sound amazing. Macros worked out on these??


Angela (Oh She Glows) January 17, 2018 at 8:51 am

Hey Kimberly, I’m sorry I don’t have the nutritional info for these. I hope you enjoy them if you try them out!


Maggie February 26, 2018 at 12:16 pm

Hi Angela. I love the cookbook! I think I may have to buy the newer one too. I’d like to try the recipe for Raspberry Oat Crumble Squares but am wondering if there is any substitution for the brown rice syrup. Just looking to cut down on the number of jars of stuff in my very small cupboard!


Angela (Oh She Glows) February 27, 2018 at 9:37 am

Hey Maggie, Thank you! :) I haven’t tried these with another sweetener, but I used BRS because it is a great binder. If you swapped it with maple syrup, let’s say, the bars would likely fall apart a lot more (but would still be tasty no doubt!)


John W. June 28, 2018 at 10:33 pm

This was perfect, thank you for the great recipe. I didn’t want to go shopping, so I substituted the rice syrup with date syrup I had just bought earlier this week. It’s going to a potluck tomorrow.

Thank you!


Lisa September 20, 2018 at 9:19 am

Looks like this post is a couple of years ago. Well I made these bars last night and man were they AMAZING! I used peach, raspberry and blueberry from the farmers market for the jam. For the bars I substituted 1 cup WW flour and 1/2 c course corn meal (cuz that’s what I had). I also wanted a gingerbread flavor so added spices and substituted molasses for the rice syrup. Yummm!!!


Angela (Oh She Glows) September 21, 2018 at 7:37 am

Hey Lisa, oh I LOVE your swaps! Especially the molasses…yum. So glad you enjoyed the squares!


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