Plum Crumble with Almond Topping & Cardamom

Set it to 350°F. Lower than you’d think. Sugar burns fast, and you need time for the juices to actually thicken instead of just boiling over the sides.

Why You’ll Love This Almond Crumble Dessert

Takes 25 minutes to prep if you move. The crumble topping comes together with your hands—no mixer, no fussing. Plums do most of the work while it bakes.

Cardamom’s the twist. Not obvious. Just this warm thing that makes the tartness snap back instead of sitting flat. Fall dessert that doesn’t need spices you don’t have.

Ground almonds keep it tender underneath while sliced ones get actually crunchy. Two textures in one topping. Doesn’t happen by accident.

Works cold the next day. Maybe better. Crumble stays crisp, fruit tastes deeper.

What You Need for Brown Sugar Plum Crumble with Almond Topping

Ground almonds—coarser grind, not powder. About a cup. Sliced or chopped almonds on top of that, maybe a half cup. They toast differently than ground. Walnuts work if almonds aren’t there.

All-purpose flour. A quarter cup plus a tablespoon. Brown sugar. Two kinds actually—a little less than a quarter cup of raw brown sugar for the crumble, and a heaping half cup of light brown sugar for the filling. Butter melted. About a half cup total split between topping and fruit.

Cardamom. A teaspoon. Optional but don’t skip it. Changes everything.

Plums. Seven cups when cut into eighths. About six to eight medium ones. Pit them first. Arrowroot powder instead of cornstarch—one tablespoon. Keeps things glossy instead of gluey. Vanilla extract. Two tablespoons butter melted into the filling itself.

How to Make Cardamom Plum Crumble with Ground Almonds

Toss the plums with light brown sugar, arrowroot, melted butter, and vanilla in a big bowl. Coat them evenly. This is where arrowroot matters—less cloudy than cornstarch, cleaner juice once it heats. Let them sit. Ten minutes. You want them starting to bleed juice but not swimming in it. There’s a window.

Mix ground almonds, sliced almonds, flour, raw brown sugar, and cardamom in another bowl. The cardamom cuts the tartness. It’s necessary. Pour in your melted butter. Use your fingers. Mix until it just barely holds together under pressure but still looks crumbly. Don’t knead it. Don’t work it to death. You’ll feel when it’s right. Should still have texture.

Use a square baking dish. Eight inches. Two liters capacity or a bit deeper. Spoon the plum mixture in evenly. Now scatter the crumble topping over it. Not pressed down. Uneven clumps. Irregularity is how you get chunks that toast golden and others that stay softer. That’s the texture.

How to Get Cardamom Almond Crumble Golden and Set

Slide it into the oven at 350. Bake 50 minutes. Watch the edges. When the juices bubble and leak out and the crumble turns golden with some darker bits, you’re close. The whole thing smells sweet-nutty. The plums soften but keep their shape.

Cool it. Fifteen minutes minimum. The juices need to gel or you get a runny mess when you cut into it. Room temperature is fine for serving but the cooling is non-negotiable.

Arrowroot Plum Crumble Tips and Common Mistakes

Plums too tart? Add an extra tablespoon of sugar to the filling. A splash more vanilla helps too.

Butter needs to cool slightly before it hits the dry ingredients or you get greasy clumps instead of a crumbly texture. Not cold. Just not hot.

The topping can be made a day ahead. Keep it cold. Bake it fresh with the fruit. Saves time later.

Too runny after baking? Bake longer uncovered. Listen for the juices to crackle, watch the edges darken. Next time if it burns, cut the sugar by a tenth. It’s a balance.

No almonds in the house? Walnuts or pecans work one-to-one. Different flavor entirely but still elegant. Hazelnuts too if you have them.

Arrowroot versus cornstarch—arrowroot wins. Clearer thickening. Doesn’t cloud the juice. Plum flavors stay bright.

The filling can macerate longer if you’re not ready to bake. Just means more juice bleeding out. Not a problem.

Plum Crumble with Almond Topping & Cardamom

By Emma

Prep:

25 min

Cook:

50 min

Total:

1h 15min

Servings:

6 servings

Ingredients

• Crunchy Topping
• 265 ml (1 ⁄1 cup) ground almonds, slightly coarser grind
• 140 ml (somewhat heaping ½ cup) sliced almonds or chopped hazelnuts for twist
• 65 ml (¼ cup + 1 tbsp) all-purpose flour, non bleached
• 55 ml (a little less ¼ cup) raw brown sugar, packed
• 130 ml (a shade over ½ cup) unsalted butter, melted and slightly cooled
• 5 ml (1 tsp) ground cardamom, optional but recommended
• Filling
• 135 ml (about heaping ½ cup) light brown sugar
• 15 ml (1 tbsp) arrowroot powder instead of corn starch
• 1.75 liters (7 cups) pitted plums cut in eights, about 6 to 8 medium
• 30 ml (2 tbsp) unsalted butter, melted
• 5 ml (1 tsp) vanilla extract, added for depth

Method

1. Baking Setup
2. 1 Rack in center of oven. Preheat oven 180 °C (350 °F), knock 10 °C down from usual because sugar can scorch. Lower temp gives more time for juices to dance and thicken.
3. 2
4. Filling Prep
5. 3 In a large sturdy bowl, toss plums with brown sugar, arrowroot powder, melted butter, and vanilla extract until well coated. The arrowroot is less gloopy than corn starch, keeps fruit bright and glossy while thickening beautifully once hot. Set aside to macerate briefly, 10 minutes enough. You want plums starting to bleed juice but not drown in it.
6. 4
7. Crunchy Topping
8. 5 Combine ground almonds, sliced nuts, flour, brown sugar, and cardamom in a medium bowl. The cardamom adds warm complexity, which cuts the plum's tartness. Pour in melted butter; mix with fingers until mixture just holds together under pressure but still crumbly. Don't overwork or it turns heavy.
9. 6
10. Assembly and Bake
11. 7 Use a roughly 20 cm (8-inch) square baking dish about 2 liters capacity; a bit deeper works too. Spoon plum mixture into dish, spread evenly. Scatter crumb topping over fruit in uneven clumps instead of pressing. Bite texture requires irregularity; chunks that toast more, others less.
12. 8 Slide into oven; bake 50 minutes. Watch edges: when bubbling juices leak and crumble turns golden-brown with some dark bits, done. The batter will smell sweet-nutty, plums tender but still shape intact. Let cool 15 minutes minimum to allow juices to gel; otherwise, runny mess.
13. 9
14. Serving
15. 10 Serve warm or room temp, perhaps with coconut whipped cream or thick yogurt for dairy free. Avoid reheating too aggressively or crumble sogs out.
16. 11
17. Pro Tips & Fixes
18. 12 - If plums underripe and tart, add extra tablespoon sugar and splash vanilla before baking.
19. 13 - Butter needs to be cool enough before mixing into dry to avoid greasy clumps.
20. 14 - Crumble topping can be prepared ahead and stored cold 1 day, just bake fresh fruit. Cuts prep at serving time.
21. 15 - Too runny? Bake a bit longer uncovered, listen for crackling juices, edges darkening. If burnt, next time reduce sugar by 10%.
22. 16 - No almonds? Chopped walnuts or pecans swapped 1:1. Texture changes but still elegant.
23. 17 - Arrowroot lends clearer thickening than corn starch; less cloudy juice, better fruit flavors.

Nutritional information

Calories

290

Protein

5g

Carbs

28g

Fat

18g

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Frequently Asked Questions About Fall Crumble Recipe

Can I make this without cardamom? Yeah. The crumble works. But you lose something—that warmth that balances the tartness. Try it once with it. Doesn’t taste spiced. Just tastes rounder.

How do I know when the plums are done? Tender but not falling apart. They hold their shape. The juices bubble at the edges. Smell it—sweet and nutty when the cardamom hits the heat right.

What if I use canned plums? Don’t. They’re already soft, they’ll turn to paste. Fresh or frozen pitted plums only.

Can I double this? Technically. Use a 9-by-13 pan. Bake maybe 60 minutes. Watch it closer—bigger dish means heat doesn’t penetrate as evenly.

Do I have to let it cool 15 minutes? If you like eating soup, skip it. The juices need time to set. It’s the difference between crumble and fruit mess.

Can I make the topping ahead? One day max. Mix it, store it cold. When you’re ready, use it straight from the fridge over the fruit. Bake fresh.

What’s the difference between ground almonds and almond flour? Ground almonds are coarser. Almond flour is finer, powdery. This crumble needs the texture of ground. Almond flour makes it dense.