Plum Crumble Bars
Hey there, fellow dessert lover! If you’ve been craving something that hits all the right notes — sweet, tart, crunchy, and chewy — then stick around. Today, I’m sharing my absolute favorite recipe for plum crumble bars. Trust me, these bars are the perfect combo of juicy fruit and buttery crumble — and they’re so easy to make, you’ll want to whip up a batch ASAP. Plus, I’ll share tips on storage and customizing them to your taste. Ready? Let’s dive in!
Why You’ll Love These Plum Crumble Bars
Before we get into the nitty-gritty, I gotta tell you why these bars are a total game-changer:
- Flavor explosion: The tartness of fresh plums balances beautifully with the sweet, buttery crumble.
- Versatile: You can swap out plums for peaches, cherries, or berries if you’re feeling adventurous.
- No fuss: They come together with simple ingredients — no fancy gadgets needed.
- Perfect for any occasion: Breakfast, snack, dessert — these bars fit all the bill.
And FYI, I’ve made these more times than I can count, and they never disappoint. They’re a hit at picnics, brunches, or just when you want a little self-love in dessert form.
Ingredients You Need (Measure Twice, Bake Once)
Here’s what you’ll need to turn these delicious bars from good to unforgettable:
For the Crumble Base and Topping:
- 2 cups rolled old-fashioned oats
- ¼ cup pure maple syrup (adds a touch of natural sweetness)
- 1 teaspoon baking powder
- 1 ½ teaspoons ground cinnamon (because cinnamon makes everything better)
- ½ teaspoon sea salt
- 2 tablespoons coconut oil, melted (but butter works too if you prefer)
- 2 teaspoons vanilla extract
For the Plum Filling:
- 2 ripe plums, pitted and mashed (or finely chopped)
- 2 ripe bananas, mashed (adds natural sweetness and moisture)
- 1 ¼ cups fresh or frozen blueberries (divided into two portions)
- 1 tablespoon ground flaxseed (or 1 large egg if you’re not vegan)
- 2 cups unsweetened vanilla almond milk
Optional Extras for Serving:
- Extra blueberries
- Nut butter (peanut, almond, whatever you love)
- Extra maple syrup for drizzling
How to Make These Bars — Step by Step
Alright, now that we’re stocked with ingredients, let’s get baking. Trust me, it’s easier than you think.
Step 1: Preheat and Prep
- Preheat your oven to 375°F (because hot ovens make everything better).
- Lightly spray an 8-inch square baking dish with cooking spray or line it with parchment paper — no sticking drama here.
Step 2: Mix the Crumble
- In a large bowl, combine oats, baking powder, cinnamon, and salt.
- Add in maple syrup, melted coconut oil, vanilla, and mashed bananas.
- Stir everything together until it looks like a chunky, sticky dough. It should hold together when pressed — if it’s too dry, add a splash more almond milk.
Step 3: Make the Blueberry-Plant-Based “Custard”
- In a medium bowl, mash plums and bananas together.
- Stir in flaxseed or egg, almond milk, and half of the blueberries.
- Gently fold in the remaining blueberries — don’t crush them all, we want those pretties visible on top.
Step 4: Assemble and Bake
- Pour the blueberry mixture into your prepared baking dish.
- Spread it out evenly with a spatula.
- Crumble the oat mixture over the top, pressing down gently to create a uniform layer.
- Scatter the remaining blueberries across the top for that beautiful burst of color and flavor.
Step 5: Bake to Perfection
- Pop it into the oven and bake for 40 to 55 minutes.
- You’ll know it’s ready when the top is golden and the middle is set.
- Let it cool for about 10 minutes so it firms up, then slice into squares.
Step 6: Serve and Enjoy
- Top each bar with a dollop of nut butter and a drizzle of maple syrup for extra indulgence.
- Or, just grab one and go — no judgment here!
Tips for Perfect Bars Every Time
- Blueberries: Fresh or frozen? IMO, fresh blueberries give the best flavor, but frozen work just fine if berries are out of season.
- Sweetness level: Adjust the maple syrup if you prefer sweeter or more tart bars.
- Texture tweak: Feel free to add chopped nuts or shredded coconut to the crumble for extra crunch.
- Bananas: The riper, the better — they add natural sweetness and help bind everything together.
Storing and Reheating
Now, let’s talk about keeping these bars fresh. Nobody wants soggy leftovers!
How to Store
- Keep the bars in an airtight container.
- Store them in the refrigerator for up to 5 days — they stay fresh and delicious.
- Want to keep them longer? Freeze individual portions wrapped in plastic wrap, then toss in a zip-top bag. They’ll keep for up to a month.
How to Reheat
- To enjoy warm, reheat a single bar in the microwave for about 30 seconds.
- For the whole batch, cover with foil and warm in a 350°F oven for about 20 minutes.
- If you’re in a rush, the microwave works just fine — just a quick minute, and voila, cozy warmth.
Final Thoughts: Go Forth and Crumble!
So there you have it — your new favorite way to enjoy plums in bar form. These crumble bars are honestly a crowd-pleaser (or a personal favorite snack). They’re wholesome, flavorful, and customizable. Plus, they’re so easy to make, you’ll wonder why you didn’t try this sooner.
Next time you see ripe plums at the market, don’t just stare — grab a bunch, bake these bars, and thank me later. Happy baking, friends! And don’t forget to share your creations — I love seeing how you make these your own. 😊
Ready to give it a shot? Grab your ingredients and start crumbling — I promise, you won’t regret it!
9
servings20
minutes55
minutes260
kcalIngredients
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 tablespoons coconut oil, melted (butter works too)
2 teaspoons vanilla extract
2 ripe plums, pitted and mashed or finely chopped
2 ripe bananas, mashed
1 1/4 cups fresh or frozen blueberries, divided
1 tablespoon ground flaxseed (or 1 large egg if not vegan)
2 cups unsweetened vanilla almond milk
Optional: extra blueberries
Optional: nut butter, for serving
Optional: extra maple syrup, for drizzling
Directions
- Preheat oven to 375°F. Lightly spray an 8-inch square baking dish with cooking spray or line with parchment paper.
- Make the crumble: In a large bowl, mix oats, baking powder, cinnamon, and salt. Add maple syrup, melted coconut oil, vanilla, and mashed bananas. Stir until a chunky, sticky dough forms; if it seems dry, add a splash more almond milk.
- Make the filling: In a medium bowl, mash plums and bananas. Stir in flaxseed (or egg), almond milk, and half of the blueberries. Gently fold in the remaining blueberries without crushing them.
- Assemble: Pour filling into the prepared baking dish and spread evenly. Crumble the oat mixture over the top and press down gently to create an even layer. Scatter extra blueberries across the top if desired.
- Bake 40–55 minutes, until the top is golden and the center is set.
- Cool about 10 minutes, then slice into bars.
- Serve with a dollop of nut butter and a drizzle of maple syrup, if you like.
Notes
- Store in an airtight container in the refrigerator up to 5 days; freeze individual portions up to 1 month. Reheat a bar in the microwave for about 30 seconds, or warm the whole batch at 350°F for about 20 minutes.

