Easy Mixed Berry Crisp with Buttery Oat Topping

This is the time of year when the berries on our farm are ready for picking. We’ve got a little of everything—domestic and wild blackberries, raspberries, strawberries, and blueberries. We love our berries, but who doesn’t? This easy mixed berry crisp with buttery oat topping is a great way to represent these delicious berries.

Why I Love This Mixed Berry Crisp?

I love making this easy mixed berry crisp recipe because it’s easy, and there’s no need to worry about making a pie crust. The main reason I love this recipe is that it uses minimal ingredients and equipment, with pantry staples, making this one of the easiest desserts you’ll ever make.

New Traditions

My husband and I grew up in different regions of the country (he was from the Appalachian Mountain region, and I was from the South), but we both grew up with similar experiences. One of those experiences was berry picking. And it is a tradition that we want our grandkids to experience. Our berries on our small farm produce enough, but I usually like to supplement with more, so we head to the local strawberry farm just outside town. It’s become something special we do every year with our daughter and grandbabies. We grab buckets and sunhats and spend the morning picking all sorts of berries, not just strawberries. We would be laughing and tasting a few along the way (quality control, of course). It’s one of those simple joys that make for lasting memories—and leaves us with more berries than we know what to do with. So I wind up freezing most of them.

Side Note About Freezing Berries

Now, if you’re using berries that have been frozen, you might notice they’re a little softer once thawed. That’s totally normal! Freezing breaks down the cell walls in the fruit, which slightly alters its texture. It’s all science, really. The freezing process forms ice crystals that can slightly alter the berry’s structure. Strawberries and raspberries tend to exhibit the most noticeable texture change due to their high water content and softer flesh. But don’t worry, they’re still full of flavor and absolutely perfect for making jam, and using in most recipes. But don’t expect to have the same look and texture as the unfrozen berry. For example, if you want to decorate with strawberry slices–not the same.

What Will You need?

• Mixed berries – blueberries, blackberries, raspberries, strawberries, etc., your choice.
• 9×9 baking dish
• Flour
• Granulated Sugar
• Oatmeal
• Butter
• Cornstarch
• Lemon juice
• Brown Sugar
• Cinnamon

Mixed Berry Crisp Recipe

That’s when this Mixed Berry Crisp comes into play. It’s one of those easy, crowd-pleasing recipes that uses up whatever mix of berries you have on hand—fresh or frozen. And the topping? Buttery, golden, and just the right amount of sweet. It’s like pie without the fuss.

Prep Time: 15 minutes

Cook Time: 40 minutes

Total Time: 55 minutes

Yield: 6–8 servings

Ingredients

For the filling:

• 2 cups strawberries, hulled and sliced
• 1 cup raspberries
• 1 cup blueberries
• 1 cup blackberries
• ½ cup granulated sugar
• 2 tablespoons cornstarch
• 1 tablespoon lemon juice
• 1 teaspoon vanilla extract

For the crisp topping:

• 1 cup old-fashioned rolled oats
• ¾ cup all-purpose flour
• ⅓ cup brown sugar (packed)
• ¼ cup granulated sugar
• ½ teaspoon cinnamon
• ½ cup (1 stick) cold unsalted butter, cubed

Instructions

• Preheat oven to 350°F.
• Lightly butter or spray a 9×9-inch baking dish.
• Prepare the filling: In a large bowl, toss together the berries, sugar, cornstarch, lemon juice, and vanilla. Pour into the prepared baking dish.
• Make the topping: In another bowl, stir together oats, flour, brown sugar, granulated sugar, and cinnamon.
• Cut in the cold butter using a pastry cutter or your fingers until the mixture is crumbly.
• Assemble & bake: Sprinkle the topping evenly over the berries.
• Bake for 35–40 minutes, or until the topping is golden and the filling is bubbling.
• Cool slightly before serving.

Best served warm with vanilla ice cream or whipped cream! Try my recipe for easy homemade whipped cream. You will not go back to store-bought.

Nutritional Stats

These nutritional stats are estimated. I researched the recipe and determined an average. I am not a nutritionist, and these numbers are an approximation.

Nutrition (per serving):

Calories: 310
Carbs: 47g
Sugar: 26g
Fat: 12g
Fiber: 4g
Protein: 3g

Storage and Reheating Tips

• Fridge: Store leftovers in the fridge for up to 4 days.
• Reheat: Warm individual servings in the microwave or reheat the entire dish in a 325°F oven until thoroughly warmed.
• Freeze (Baked or Unbaked): Wrap well and freeze for up to 2 months. If unbaked, bake straight from frozen, adding 10–15 extra minutes.

Maybe it’s the smell of sweet fruit bubbling in the oven or the way the oat topping crisps up just right. Maybe it’s knowing that those berries came from your own hands or the hands of people you love — picked with little fingers, on sunny mornings that turn into sweet memories. However you serve it, this recipe brings a little bit of summer to the table, and that’s something worth sharing.

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Nutritional Disclaimer

All nutritional information shared on this site is an approximation. I am not a certified nutritionist, and any nutritional information shared on this site should be used as a general guideline. Any nutritional information provided by “Back to the Basics with Laura” is provided as a courtesy and should be considered an estimate rather than a guarantee. Ingredients can vary, and we cannot guarantee the accuracy of this information.