Strawberry Crumble – Juicy, Jammy Strawberries with a Golden Buttery Oat Topping

This Strawberry Crumble is one of those simple desserts that tastes like summer in every spoonful. Fresh strawberries bake down into a warm, juicy filling with just enough sugar and lemon to bring out their natural sweetness, while the top turns crisp, buttery, and golden.

The contrast is what makes it irresistible: soft, jammy berries underneath and crunchy brown-sugar oat crumble on top. There's no pie crust to roll and no complicated technique, making it an easy dessert for cookouts, family dinners, Mother's Day, Fourth of July gatherings, or whenever strawberries are in season.

Serve it warm with a scoop of vanilla ice cream and let the melting ice cream mingle with the strawberry juices.

Ingredients

For the Strawberry Filling

• 2 pounds fresh strawberries
• ⅓ cup granulated sugar
• 2 tablespoons cornstarch
• 1 tablespoon fresh lemon juice
• 1 teaspoon lemon zest
• 1 teaspoon pure vanilla extract
• ⅛ teaspoon kosher salt

For the Crumble Topping

• 1 cup all-purpose flour
• 1 cup old-fashioned rolled oats
• ¾ cup packed light brown sugar
• ½ teaspoon ground cinnamon
• ¼ teaspoon kosher salt
• ½ cup (1 stick) unsalted butter, melted
• 1 teaspoon pure vanilla extract

Optional Add-Ins

• ½ cup chopped pecans or sliced almonds
• ¼ teaspoon ground nutmeg
• ½ cup shredded coconut

For Serving

• Vanilla ice cream
• Fresh whipped cream
• Fresh strawberries

How to Make Strawberry Crumble

Step 1 – Preheat the Oven

Preheat your oven to 375°F (190°C).

Lightly butter or grease a 9-inch square baking dish or similar 2-quart baking dish.

Step 2 – Prepare the Strawberries

Wash and thoroughly dry the strawberries.

Remove the stems and cut large berries into quarters and smaller berries into halves.

Try to keep the pieces relatively substantial. Very finely chopped strawberries can release too much liquid and become overly soft.

Make the Strawberry Filling

Step 3 – Season the Berries

Place the strawberries in a large bowl.

Add:

• Granulated sugar
• Cornstarch
• Lemon juice
• Lemon zest
• Vanilla
• Salt

Gently toss until the strawberries are evenly coated.

Let them stand for approximately 5–10 minutes.

Step 4 – Transfer to the Baking Dish

Pour the strawberry mixture, including any juices in the bowl, into the prepared baking dish.

Spread the berries into an even layer.

Make the Buttery Crumble Topping

Step 5 – Combine the Dry Ingredients

In another bowl, combine:

• Flour
• Rolled oats
• Brown sugar
• Cinnamon
• Salt

If using nuts, add them now.

Step 6 – Add the Butter

Pour in the melted butter and vanilla.

Stir with a fork until the mixture is thoroughly moistened and forms small and large buttery clumps.

Don't try to make the mixture perfectly uniform.

Those irregular chunks become the best crunchy pieces after baking.

Assemble the Crumble

Step 7 – Add the Topping

Scatter the crumble mixture evenly over the strawberries.

Use your fingers to squeeze some of the topping into larger clusters as you sprinkle it over the fruit.

Don't press the topping firmly into the berries.

You want it sitting loosely on top so it becomes crisp.

Bake

Bake at 375°F (190°C) for 35–45 minutes.

The crumble is ready when:

• The topping is deeply golden
• The strawberry filling is bubbling around the edges
• The juices have visibly thickened
• Your kitchen smells like butter, brown sugar, and strawberries

If the topping begins browning too quickly, loosely cover the dish with aluminum foil during the final portion of baking.

Let It Rest

This step makes a big difference.

Allow the strawberry crumble to rest for at least 20–30 minutes before serving.

Straight from the oven, the strawberry juices will be extremely loose.

As the dessert cools slightly, the cornstarch continues thickening the filling into a more luscious, jammy consistency.

Serve It Warm

Spoon the warm strawberry crumble into bowls.

Top each serving with a generous scoop of vanilla bean ice cream.

The cold ice cream will slowly melt into the warm strawberry filling and buttery oat topping.

For an extra-pretty finish, add sliced fresh strawberries on top.

Chef's Tips for the Best Strawberry Crumble

• Use ripe but firm strawberries. Overripe berries can produce an excessively watery filling.
• Dry the strawberries after washing them.
• Cut the berries into larger pieces rather than tiny chunks.
• Don't skip the cornstarch—it thickens the natural strawberry juices.
• Lemon juice balances the sweetness and brightens the berries.
• Lemon zest adds even more fresh strawberry-friendly flavor.
• Use old-fashioned rolled oats rather than instant oats.
• Brown sugar is ideal for the topping because it creates deeper caramel flavor.
• Make some large crumble clusters instead of keeping everything sandy.
• Don't pack the topping tightly over the berries.
• Bake until the fruit is visibly bubbling.
• Let the crumble rest before serving.
• Serve warm rather than scorching hot for the best flavor and texture.

The Secret to a Thick, Jammy Strawberry Filling

Strawberries contain a lot of water.

That's why simply combining strawberries and sugar can produce something closer to strawberry soup than a proper crumble filling.

Cornstarch solves the problem—but it needs enough heat to activate.

Don't remove the crumble from the oven just because the topping looks golden. Look around the edges of the baking dish.

The strawberry juices should be actively bubbling.

Then give the crumble at least 20 minutes to cool slightly. The filling will transform from loose juice into a glossy, spoonable strawberry sauce.

The Secret to Big Crunchy Crumble Clusters

After adding the melted butter, squeeze handfuls of topping together with your fingers.

Then gently break those pieces into irregular chunks.

Use a combination of:

• Fine crumbs
• Medium clusters
• Large buttery chunks

That variety creates a much more interesting topping than a completely uniform layer.

And don't press it down.

Loose crumble = more exposed edges = more golden crunch.

Fresh vs. Frozen Strawberries

Fresh strawberries give you the best texture, especially during strawberry season.

However, frozen strawberries can work.

If using frozen berries:

• Don't thaw them first
• Use about 2 pounds frozen strawberries
• Increase cornstarch to approximately 3 tablespoons
• Expect the crumble to need an additional 5–10 minutes in the oven

Make sure the filling is bubbling before removing it.

Delicious Variations

Strawberry Rhubarb Crumble

Replace about one-third of the strawberries with chopped rhubarb.

Increase the sugar slightly to balance the tart rhubarb.

Strawberry Blueberry Crumble

Replace 1 cup of strawberries with fresh blueberries.

Strawberry Peach Crumble

Combine sliced peaches and strawberries for a fantastic summer dessert.

Strawberry Almond Crumble

Add ½ cup sliced almonds to the topping and ¼ teaspoon almond extract to the filling.

Strawberry Pecan Crumble

Add ½ cup chopped toasted pecans to the oat topping.

Strawberry Chocolate Crumble

Scatter about ½ cup semisweet chocolate chunks over the strawberries before adding the crumble.

Individual Strawberry Crumbles

Instead of one large baking dish, divide the strawberry filling among individual ramekins.

Top generously with crumble mixture.

Place the ramekins on a baking sheet and bake until the tops are golden and the strawberry filling bubbles around the edges.

These are especially nice for dinner parties or Valentine's Day desserts.

What to Serve With Strawberry Crumble

The classic choice is vanilla ice cream, but you can also try:

• Fresh whipped cream
• Mascarpone cream
• Greek yogurt
• Vanilla custard
• Crème fraîche
• Strawberry ice cream
• White chocolate ice cream

For breakfast or brunch leftovers, a spoonful of crumble over thick vanilla Greek yogurt is delicious.

Make-Ahead Tips

The crumble topping can be prepared up to 3 days ahead and refrigerated in an airtight container.

You can also prepare the strawberry filling several hours before baking.

For the crispiest topping, keep the fruit and crumble separate until you're ready to bake.

Storage

Refrigerator

Once completely cooled, cover the baking dish or transfer leftovers to an airtight container.

Refrigerate for up to 3–4 days.

Because the dessert contains cooked fruit, refrigeration is preferable to leaving it at room temperature for extended periods.

Freezing

Strawberry crumble can be frozen, although the topping will lose some crispness.

Freeze tightly covered for up to 2 months.

Thaw overnight in the refrigerator before reheating.

How to Reheat Strawberry Crumble

Oven

For the best texture, reheat at 350°F (175°C) for approximately 10–15 minutes, or until warm.

The oven helps crisp the topping again.

Microwave

Microwave individual servings for approximately 20–30 seconds at a time.

This is faster, although the topping will be softer.

Notes

• The amount of sugar can be adjusted depending on how sweet your strawberries are.
• Don't eliminate all the sugar from the topping—it contributes to both flavor and crispness.
• A metal or ceramic baking dish both work well.
• Place the baking dish on a sheet pan if your strawberries are particularly juicy; this catches any bubbling overflow.
• For a bakery-style finish, sprinkle a little coarse sugar over the crumble before baking.
• Strawberry Crumble is especially delicious during spring and summer gatherings, backyard cookouts, Mother's Day, Memorial Day, Fourth of July, Sunday dinners, or whenever fresh strawberries are at their sweetest.