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There’s something satisfying about cutting into a pan of raspberry almond crumble bars and seeing that thick, jammy raspberry layer sitting between two buttery crumb layers.
I started making these after a weekend trip to a small bakery outside Portland that sold almond bars the size of bricks. Mine are smaller, but the crust is the same idea: cold butter, almond flour, and just enough sugar to hold together without turning cakey.
The filling is the easy part. Fresh or frozen raspberries cook down with sugar, cornstarch, and a splash of lemon juice until it coats a spoon. That’s your cue it’s ready.
One thing I learned the hard way: slice these too soon and the filling oozes everywhere. Give the pan a full hour to cool before you touch a knife to it.
Why You’ll Love This Recipe
- One bowl makes both the crust and the topping
- No rolling pin or pastry skills required
- Freezer-friendly for make-ahead dessert or snacks
- Tart raspberry filling balances the buttery almond crumb
Ingredient Notes
- All-purpose flour: Gives the crust and crumble their structure. You can sub half with whole wheat flour for a nuttier crumb.
- Almond flour: Use finely ground blanched almond flour, not almond meal, for a smoother crumb. It adds tenderness on top of the almond extract flavor.
- Unsalted butter: Keep it cold and cubed straight from the fridge. Softened butter makes the crumble greasy instead of crumbly.
- Raspberries: Fresh or frozen both work. If using frozen, don’t thaw first, just add about 5 extra minutes to the bake.
- Cornstarch: Thickens the raspberry filling so bars slice cleanly instead of oozing. Arrowroot starch works as a 1:1 swap.
- Almond extract: Concentrated, so a little goes far. Swap in vanilla extract if you want a milder background flavor.
- Sliced almonds: Scattered over the top for crunch and color. Sliced pistachios make a good substitute if you want a different look.
Raspberry Almond Crumble Bars with a Buttery Crumb
Ingredients
Method
- Heat the oven to 175 C / 350 F. Line a 9x9 inch pan with parchment, leaving an overhang on two sides.
- Whisk flour, almond flour, sugar, and salt in a large bowl.
- Cut in the cold butter with a pastry cutter or your fingers until the mixture forms pea-sized crumbs. Stir in almond extract.
- Press about two-thirds of the mixture firmly into the bottom of the pan in an even layer.
- Bake the crust for 12 to 15 minutes, until light golden at the edges. Set aside the remaining crumble.
- While the crust bakes, toss raspberries with sugar, cornstarch, and lemon juice in a saucepan.
- Cook over medium heat for 4 to 5 minutes, stirring, until the mixture thickens enough to coat the back of a spoon.
- Spread the raspberry filling evenly over the warm baked crust.
- Scatter the reserved crumble and sliced almonds over the filling in an even layer.
- Bake for 28 to 30 minutes, until the topping is golden and the filling bubbles at the edges.
- Cool the bars in the pan at room temperature for at least 1 hour before lifting out and slicing into 16 pieces.
Notes
- Use cold, cubed butter straight from the fridge for the crumbliest texture.
- Bake the crust until light golden before adding filling to avoid a soggy layer.
- Let bars cool fully, about 1 hour, before slicing for clean edges.
- Toast sliced almonds on top a bit longer if they aren't golden by the time the filling bubbles.
Tips for Success
- Chill the crumble mixture 10 minutes before pressing if your kitchen is warm, so the butter doesn’t soften too fast.
- Press the base layer firmly with the flat bottom of a measuring cup to prevent a crumbly, uneven bottom crust.
- Cook the raspberry filling a full 60 seconds after adding cornstarch so it actually thickens instead of staying runny.
- Cool the bars completely, about an hour, before slicing or the raspberry filling will run out when you cut in.
- Wipe your knife clean and warm between cuts for neat bar edges instead of dragging crumble through the filling.
Variations
- Swap raspberries for blackberries or a mixed berry blend, keeping the same 360g total weight and cornstarch amount.
- Add 1/2 tsp cinnamon to the crumble mixture for a warmer, spiced background note against the tart raspberries.
- Stir 1 tbsp lemon zest into the filling for a brighter, more citrus-forward raspberry layer.
Storage and Reheating
Store raspberry almond crumble bars in an airtight container at room temperature for up to 3 days. The crumble topping stays crisp for the first two days, then softens slightly.
For longer storage, refrigerate up to a week, though the crust firms up more in the fridge. Let chilled bars sit at room temperature for 15 minutes before eating so the butter softens back up.
To freeze, wrap individual bars tightly in plastic and store in a freezer bag for up to 3 months. Thaw at room temperature for about an hour, or microwave a single bar for 10 seconds to soften it.
Serving Suggestions
Serve raspberry almond crumble bars slightly warm with a scoop of vanilla ice cream, letting it melt into the raspberry layer. A dollop of lightly sweetened whipped cream works too if you want something lighter.
For an afternoon treat, pair a bar with black coffee or a cup of Earl Grey. The bitterness cuts through the sweetness of the crumble.
Dust the top with powdered sugar right before serving if you’re bringing these to a gathering. It hides any uneven crumble spots and looks intentional.
FAQ
Why did my raspberry almond crumble bars turn out soggy on the bottom?
Soggy bottoms usually mean the crust didn’t bake long enough before the raspberry filling went on top. Bake the base for the full 12 to 15 minutes until it’s light golden and firm, not just pale. Also confirm the raspberry filling actually thickened with the cornstarch before it goes into the oven.
Can I use frozen raspberries instead of fresh in this recipe?
Yes, frozen raspberries work fine and you don’t need to thaw them first. Toss them straight from the freezer with the sugar, cornstarch, and lemon juice, then add about 5 extra minutes to the bake since the filling starts out colder. Let the bars cool a bit longer before slicing since frozen fruit releases more juice.
How long do raspberry almond crumble bars keep, and can I freeze them?
These bars keep in an airtight container at room temperature for up to 3 days, or in the fridge for about a week. To freeze, wrap individual bars tightly and store for up to 3 months. Thaw at room temperature for roughly an hour before serving.
What goes well with raspberry almond crumble bars for dessert?
Vanilla ice cream or lightly sweetened whipped cream both pair well, since the cold contrast plays off the warm almond crumble. A cup of black coffee or Earl Grey tea also balances the sweetness nicely if you’re serving these as an afternoon snack instead of dessert.
Are raspberry almond crumble bars gluten free?
Not as written, since the crust and crumble use regular all-purpose flour. To make them gluten free, swap in a 1:1 gluten-free baking blend and check that your almond flour is processed in a dedicated gluten-free facility. The texture stays close to the original recipe.
What’s the difference between raspberry almond crumble bars and a raspberry frangipane tart?
Crumble bars use a press-in shortbread base with a loose crumb topping, while a frangipane tart has a baked almond cream filling inside a rolled pastry shell. Crumble bars are quicker since there’s no rolling or blind baking, just press, fill, and top.
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