Hey there, fellow dessert lover! If you’re like me, you’re always on the hunt for that just right sweet treat, something that hits all the notes: buttery, crumbly, fruity, and downright addictive. Well, today I’m sharing my absolute favorite recipe: crumble bars with jam. These bars are a game-changer, whether you’re craving a quick breakfast, a sweet snack, or a dessert to impress your friends. Plus, they’re ridiculously easy to make, no fancy skills required. So, grab your apron, and let’s get baking!

Why You’ll Love These Crumble Bars with Jam

Before I dive into the recipe, I gotta say, these bars are a total crowd-pleaser. Think of them as a cross between a cookie, a fruit tart, and a crunchy crumble. The best part? You can customize the jam flavor, strawberry, raspberry, apricot, whatever your heart desires. They’re perfect for meal prep, gifting, or just indulging yourself because, let’s be honest, life’s too short for boring snacks.

Pro tip: I’ve baked these so many times, I’ve lost count. Every time, they come out perfectly golden, with a delightful crumble topping that’s just the right amount of crunch. FYI, they stay fresh for days, more on storage later, so you can enjoy them all week long.

Ingredients You’ll Need

This recipe keeps things simple with pantry staples and a few fresh ingredients. Here’s what you’ll need:

2 cups rolled old-fashioned oats
¼ cup pure maple syrup
1 teaspoon baking powder
1 ½ teaspoons ground cinnamon
½ teaspoon sea salt
2 cups unsweetened vanilla almond milk (or any plant-based milk)
1 tablespoon ground flaxseed (or 1 large egg, if you’re not vegan)
2 tablespoons coconut oil, melted
2 teaspoons vanilla extract
2 ripe bananas, mashed
1 ¼ cups fresh or frozen blueberries, divided
Additional blueberries, nut butter, and extra maple syrup for serving (optional but highly recommended)

Note: I love using almond milk because it keeps the bars dairy-free and light, but feel free to swap in cow’s milk if that’s your jam.

Step-by-Step: How to Make Crumble Bars with Jam

Now, I know what you’re thinking: “Sounds delicious, but how do I actually make these?” No worries, I’ll walk you through it like a friend who’s just as obsessed with baking as you are.

1. Preheat and Prep

Set your oven to 375°F (190°C). Spray an 8-inch square baking dish with cooking spray, trust me, you want these to come out easily.

2. Mix the Crumble Base

In a big mixing bowl, combine:

2 cups oats
1 teaspoon baking powder
1 ½ teaspoons ground cinnamon
½ teaspoon sea salt

Stir until evenly mixed. I like to do this first so everything’s ready to go.

3. Combine the Wet Ingredients

In a separate bowl, whisk together:

2 cups almond milk
¼ cup maple syrup
1 tablespoon ground flaxseed (or 1 egg if you prefer)
2 tablespoons melted coconut oil
2 teaspoons vanilla
2 mashed bananas

Mix until smooth. The bananas add a subtle sweetness and moisture, plus, they make the bars extra tender.

4. Bring It All Together

Pour the wet mixture into the dry ingredients. Stir gently until everything’s just combined. Don’t overmix, this keeps the crumble tender and crumbly, not dense.

5. Add the Blueberries

Fold in 1 cup of blueberries. Gently, so you don’t crush them all. Then, pour the batter into your prepared baking dish and spread it out evenly.

6. Top with Blueberries

Sprinkle the remaining ¼ cup of blueberries across the top. This creates a gorgeous, berry-studded crust that’s just bursting with flavor.

7. Bake to Perfection

Pop the dish into the oven and bake for 40 to 55 minutes. The bars are done when the top is golden brown and the middle is set. The longer you bake, the more cohesive and firm they become, so keep an eye on them.

8. Cool and Serve

Remove from the oven and let cool for about 10 minutes. Slice into squares, and if you’re feeling fancy, add dollops of nut butter, extra blueberries, or a drizzle of maple syrup. Honestly, this is where the magic happens.

Storing and Reheating Your Crumble Bars

No one wants to waste a good thing, right? Here’s how to keep your bars fresh and tasty:

Customization Tips and Variations

Want to make these bars your own? Here are some ideas:

Jam flavors: Strawberry, raspberry, apricot, or even fig, use whatever you love.
Nut butters: Swirl in peanut butter or almond butter before baking for added richness.
Add-ins: Chopped nuts, shredded coconut, or chocolate chips work wonders.
Sweetener swap: Honey or agave can replace maple syrup if that’s your thing.

Honestly, these bars are pretty forgiving. Feel free to experiment and make them your signature snack.

Final Thoughts: Why These Crumble Bars Are a Must-Try

If you’re tired of boring snacks or need a dessert that’s both comforting and a little fancy, these crumble bars with jam are your new best friend. They’re healthy-ish, customizable, and insanely delicious. Plus, they make your house smell amazing, kind of like a cozy bakery on a lazy Sunday.

So, what are you waiting for? Grab those ingredients, channel your inner baker, and treat yourself. Trust me, once you taste these, you’ll be hooked. And don’t forget, share a few with friends or family. Because good food tastes even better when shared, right? Happy baking! 😊

P.S. If you give these a try, tag me on social media, I’d love to see your creations!

Crumble Bars with Jam (Blueberry Crumble Bars)

Recipe by ArmanDifficulty: Easy

Servings

Ingredients

2 cups rolled old-fashioned oats
1/4 cup pure maple syrup
1 teaspoon baking powder
1 1/2 teaspoons ground cinnamon
1/2 teaspoon sea salt
2 cups unsweetened vanilla almond milk (or any plant-based milk)
1 tablespoon ground flaxseed (or 1 large egg if not vegan)
2 tablespoons coconut oil, melted
2 teaspoons vanilla extract
2 ripe bananas, mashed
1 1/4 cups fresh or frozen blueberries, divided
Jam (strawberry/raspberry/apricot or other), for swirling or spooning (optional)
Nut butter, extra blueberries, and extra maple syrup for serving (optional)

Directions

Preheat oven to 375°F (190°C). Spray an 8-inch square baking dish with cooking spray.
In a large bowl, mix oats, baking powder, cinnamon, and sea salt until evenly combined.
In a separate bowl, whisk together almond milk, maple syrup, flaxseed (or egg), melted coconut oil, vanilla extract, and mashed bananas until smooth.
Pour wet mixture into dry ingredients and stir gently just until combined (do not overmix).
Fold in 1 cup of blueberries. Spread batter into the prepared baking dish.
If using jam, spoon 2–4 tablespoons of jam over the top and lightly swirl with a knife (optional).
Sprinkle remaining 1/4 cup blueberries over the top.
Bake for 40–55 minutes, until the top is golden brown and the center is set.
Cool for about 10 minutes, then slice into squares. Serve warm or at room temperature with optional nut butter, extra blueberries, and a drizzle of maple syrup.

Notes

Store in an airtight container in the fridge up to 5 days or freeze individual bars up to 3 months. Reheat at 350°F (about 20 minutes) covered with foil, or microwave single bars 30–60 seconds.

About the author

Written by Arman

Hi, I'm Muhammad Arman, a healthy food expert who is passionate about helping you build a better life through real, nourishing food. I share simple, practical tips and clean recipes because I truly believe that eating well should feel good, not complicated.

Published May 6, 2026 Updated May 15, 2026