Easy Mixed Berry Crumble

Name: Easy Mixed Berry Crumble
Prep time: 10 min
Cook time: 45 min
Total time: 55 min
Ingredients: 1 ½ cup gluten-free flour; 1 stick salted butter or vegan butter (cold sliced (½ cup = 8 tablespoons = 113 g)); ½ cup brown sugar or coconut sugar; 1 tsp ground cinnamon; ½ tsp baking powder; Vanilla Ice Cream or DF ice cream; 2 pounds mixed berries (about 6 cups); ½ cup + 2 tbsp coconut sugar or brown sugar (packed); 2 tbsp cornstarch; 1 teaspoon fresh lemon juice; 1 teaspoon lemon zest

By Ashley McCrary

Published Jan 16, 2026

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If you’re craving a mixed berry crumble with warm baked berries, a juicy berry filling, and a crisp golden topping, this one checks every box. It’s comforting, easy, and full of bright berry flavor that feels like something you’d scoop straight out of Grandma’s kitchen.

Mixed berry crumble topped with a scoop of vanilla ice cream on a pink backdrop.

Why You’ll Love This Berry Crumble Recipe

A crumble is the kind of easy dessert you can pull together anytime, and it always rewards you with warm, bubbly berries and a crisp golden topping that feels comforting in any season. Whether you’re using fresh berries in the summer or frozen ones in the winter, it bakes up beautifully every single time.

If you love simple, fruit-forward treats like my Easy Paleo Apple Crisp or cozy berry bakes like my Keto Blueberry Cobbler, this crumble will fit right into your dessert rotation. And if you’re craving something sweet but extra quick, my Keto Strawberry Shortcake Bars are another easy berry treat to keep on hand.

Crumble toppings traditionally skip the oats you’d find in a crisp, giving you a softer, more buttery finish. This version leans classic crumble-style, but you can always stir in a handful of oats if you like a little extra texture!

Ingredients You’ll Need

a close up of the mixed berry crumble with ice cream

For the Crumble Topping

Gluten-free flour: Builds the structure of the crumble and keeps it tender.
Salted butter or vegan butter: Cold butter is the secret to a crisp golden topping! It melts slowly, creating crunchy, buttery pockets.
Brown sugar or coconut sugar: Helps the topping caramelize and gives that classic crumble sweetness.
Ground cinnamon: A warm spice that brings out the natural sweetness of the berries.
Baking powder: Lightens the topping so it bakes up crisp rather than dense.
Vanilla ice cream or dairy-free ice cream: A simple finishing touch that melts into the warm crumble.

For the Filling

Mixed berries: Fresh or frozen, both work beautifully. Frozen berries make this a great year-round dessert.
Coconut sugar or brown sugar: Enhances the natural fruit flavor and deepens the color of the filling.
Cornstarch: Thickens the berry juices so the crumble isn’t watery.
Fresh lemon juice: Adds brightness and balances sweetness.
Lemon zest: Lifts the flavor and adds fresh citrus aroma.

Together, these ingredients bake into a juicy berry filling that thickens beautifully under a buttery crumble topping.

How to Make This Mixed Berry Crumble

Step 1: Prep the oven and dish. Preheat the oven to 350°F. Lightly grease a 9×9 or 8×11 baking dish, or use a 10-inch cast iron or enamel skillet. Make the fruit filling. In a large bowl, mix the berries with the sugar, cornstarch, lemon juice, and lemon zest. Toss gently to coat. Spread the mixture into the dish. *Tip: Don’t thaw frozen berries, just bake them straight from the freezer.

Step 2: Make the crumble topping. In another bowl, combine the flour, sugar, cinnamon, and baking powder. Add the cold, sliced butter. Work it in with your fingers, a fork, or a pastry cutter until you have coarse crumbs with some pea-sized bits of butter throughout.

the berries with the crumble mixute ready to go in the oven

Step 3: Assemble and bake. Sprinkle the crumble topping evenly over the berries. Bake for 40-45 minutes, or until the edges bubble and the topping turns deep golden.

the cooked berry crumble topped with vanilla ice cream

Step 4: Cool and serve. Let the crumble rest for 10-15 minutes so the thickened fruit filling can set and scoop cleanly. Serve warm with vanilla or dairy-free ice cream and enjoy!

Mac’s Pro Tip

Quick Tips

How to Keep Mixed Berry Crumble from Getting Watery: Coat the berries fully in cornstarch and bake until the juices bubble around the edges. Cooling for at least 10 minutes allows the thickened fruit filling to set.
Can You Use Frozen Berries? Yes, use them straight from the freezer. This prevents excess moisture and helps the crumble bake into a thick, juicy berry filling.
How to Get a Crisp, Golden Topping: Use cold butter, avoid over-mixing, and bake until the top is deeply golden. Those buttery crumbs are key to great texture!

a close up of the crumble with melted vanilla ice cream

Make Ahead, Storage & Reheating

This crumble is a wonderful make-ahead dessert. Prepare the fruit filling and crumble topping separately up to 24 hours in advance and refrigerate. When you’re ready to bake, assemble and pop it in the oven.
If you’d like to prep further ahead, the topping can be made and frozen for up to a month – just sprinkle it over the berries right before baking. Leftovers store well in the fridge for up to 4 days. Reheat in the oven at 325°F until warmed through. The topping stays crisp even after reheating, which makes this a reliable make-ahead dessert for any night of the week.

Mixed Berry Crumble Recipe FAQs

Why is my mixed berry crumble watery?

It usually needs more cornstarch or more bake time. Make sure the filling bubbles around the edges before removing it from the oven.

Should I thaw frozen berries before baking?

No, thawing releases too much liquid, which can make the crumble soupy.

How do I keep the mixed berry crumble topping crisp?

Cold butter, the right crumb texture, and baking long enough for the topping to fully brown.

Can I make this mixed berry crumble gluten-free or dairy-free?

Yes! Use gluten-free flour and vegan butter for an easy gluten-free crumble topping that still browns beautifully.

Is this a good summer dessert?

Absolutely! It’s a simple summer dessert that’s perfect for berry season, backyard dinners, or warm-weather gatherings.

This mixed berry crumble is one of those timeless recipes that brings people together – warm, cozy, and full of sweet fruit flavor. Whether you use fresh berries in the summer or frozen berries in the winter, this dessert never disappoints! If you’re craving more fruit-filled treats, try my Peach Crisp Popsicles next.

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