Triple Berry Crisp Oat Crumble offers a delightful and wholesome dessert that’s surprisingly simple to whip up. This recipe is perfect for anyone seeking a comforting, fruit-forward treat with a satisfyingly crunchy topping, making it a go-to for busy weeknights or special occasions.
Key Ingredients for Triple Berry Crisp Oat Crumble
- For the Berry Filling:
- 4 cups mixed berries (fresh or frozen, such as strawberries, blueberries, raspberries, and blackberries)
- 2 tablespoons granulated sugar (adjust to sweetness of berries)
- 1 tablespoon cornstarch (or all-purpose flour)
- 1 tablespoon fresh lemon juice
- 1 teaspoon vanilla extract
- Pinch of salt
- For the Oat Crumble Topping:
- 1 cup rolled oats (old-fashioned oats recommended)
- 1/2 cup all-purpose flour
- 1/3 cup packed brown sugar
- 1/4 cup granulated sugar
- 1/2 teaspoon ground cinnamon
- 1/4 teaspoon ground nutmeg
- 1/2 cup (1 stick) cold unsalted butter, cut into small cubes
How to Make Triple Berry Crisp Oat Crumble
Get ready to experience pure comfort food bliss with this Triple Berry Crisp Oat Crumble! It’s incredibly easy to assemble, boasting a vibrant, sweet-tart berry filling topped with a gloriously golden and crumbly oat mixture. The contrasting textures – soft, warm fruit against the crisp topping – are simply divine. With a preparation time of just 20 minutes and baking time of around 35-40 minutes, you’ll have a delicious, satisfying dessert ready to impress with minimal fuss.
Step-by-Step Instructions
- Preheat Oven and Prepare Baking Dish: Preheat your oven to 375°F (190°C). Lightly grease a 2-quart baking dish (an 8×8 inch or a similar round or oval dish works well).
- Prepare the Berry Filling: In a large bowl, combine your mixed berries. If using frozen berries, there’s no need to thaw them completely; a little frost is fine. Add the granulated sugar, cornstarch (or flour), fresh lemon juice, vanilla extract, and a pinch of salt to the berries. Gently toss everything together until the berries are evenly coated. The cornstarch will help thicken the juices as the crisp bakes.
- Transfer Berries to Baking Dish: Pour the berry mixture evenly into the prepared baking dish. Spread them out so there are no large clumps.
- Prepare the Oat Crumble Topping: In a separate medium bowl, whisk together the rolled oats, all-purpose flour, packed brown sugar, granulated sugar, ground cinnamon, and ground nutmeg. These dry ingredients form the base of your delicious crumble.
- Incorporate the Butter: Add the cold, cubed unsalted butter to the dry ingredients. Using your fingertips, a pastry blender, or two forks, cut the butter into the dry ingredients until the mixture resembles coarse crumbs with some pea-sized pieces of butter still visible. This is key for a tender, crumbly topping that doesn’t get hard. Don’t overmix; you want those little butter pockets to create pockets of crispiness.
- Add Topping to Baking Dish: Evenly sprinkle the oat crumble mixture over the top of the berry filling in the baking dish. Ensure the entire surface of the berries is covered with the crumble.
- Bake the Crisp: Place the baking dish on a baking sheet (this catches any potential berry drips) and bake in the preheated oven for 35-40 minutes, or until the topping is golden brown and crisp, and the berry filling is bubbly around the edges.
- Let it Rest: Once baked, carefully remove the Triple Berry Crisp Oat Crumble from the oven. Let it stand for at least 10-15 minutes before serving. This allows the filling to set slightly, making it easier to serve and preventing it from being scalding hot.
Why You’ll Love This Triple Berry Crisp Oat Crumble
You’ll absolutely adore this Triple Berry Crisp Oat Crumble for its comforting elegance and incredible versatility. The star is undoubtedly the burst of jewel-toned berries, expertly balanced with just the right amount of sweetness and a hint of tartness, all nestled under that irresistible, buttery oat topping. Making this at home is not only a treat for your taste buds but also a fantastic way to save money compared to store-bought desserts, allowing you to control the quality and quantity of ingredients.
This delightful crisp rivals any bakery-bought apple crumble or berry cobbler with its perfect balance of textures and flavors. The warm, mingled berry juices create a luscious base, while the crunchy, slightly sweet oat topping provides a satisfying contrast in every spoonful. It’s the perfect ending to any meal or a wonderful treat on its own, best served warm with a scoop of vanilla ice cream or a dollop of whipped cream. Give this Triple Berry Crisp Oat Crumble a try – your kitchen will smell divine, and your family will thank you!
Storing and Reheating Tips
Properly storing your Triple Berry Crisp Oat Crumble ensures you can enjoy its deliciousness for days to come.
- Refrigeration: Once completely cooled, cover the baking dish tightly with plastic wrap or transfer leftovers to an airtight container. Store in the refrigerator for up to 3-4 days. The crisp topping may soften slightly in the refrigerator, but the flavor remains excellent.
- Freezing: For longer storage, you can freeze the baked and cooled crisp. Cover it very well with plastic wrap, followed by aluminum foil, or place portions in freezer-safe containers. It can be frozen for up to 2-3 months.
- Reheating:
- Oven Method: The best way to reheat is in a preheated oven at 300°F (150°C) for about 15-20 minutes, or until heated through. This will help restore some of the crispness to the topping. Place it on a baking sheet.
- Microwave Method: For a quicker reheat, microwave individual portions on a microwave-safe plate for 30-60 seconds, or until warmed through. Note that the topping will be softer.
- From Frozen: If reheating from frozen, you can place it directly into a 300°F (150°C) oven and bake for 30-45 minutes, or until heated through.
Final Thoughts
The Triple Berry Crisp Oat Crumble is a simple yet incredibly rewarding dessert that truly celebrates the deliciousness of fruit. Encourage yourself to whip up a batch this week; it’s a guaranteed crowd-pleaser that brings warmth and comfort to any table.

Triple Berry Crisp Oat Crumble
Ingredients
Equipment
Method
- Preheat your oven to 375°F (190°C). Lightly grease a 2-quart baking dish (an 8×8 inch or a similar round or oval dish works well).
- In a large bowl, combine your mixed berries. If using frozen berries, there’s no need to thaw them completely; a little frost is fine. Add the granulated sugar, cornstarch (or flour), fresh lemon juice, vanilla extract, and a pinch of salt to the berries. Gently toss everything together until the berries are evenly coated.4 cups mixed berries (fresh or frozen, such as strawberries, blueberries, raspberries, and blackberries), 2 tablespoons granulated sugar, 1 tablespoon cornstarch (or all-purpose flour), 1 tablespoon fresh lemon juice, 1 teaspoon vanilla extract, Pinch salt
- Pour the berry mixture evenly into the prepared baking dish. Spread them out so there are no large clumps.
- In a separate medium bowl, whisk together the rolled oats, all-purpose flour, packed brown sugar, granulated sugar, ground cinnamon, and ground nutmeg. These dry ingredients form the base of your delicious crumble.1 cup rolled oats (old-fashioned oats recommended), 1/2 cup all-purpose flour, 1/3 cup packed brown sugar, 1/4 cup granulated sugar, 1/2 teaspoon ground cinnamon, 1/4 teaspoon ground nutmeg
- Add the cold, cubed unsalted butter to the dry ingredients. Using your fingertips, a pastry blender, or two forks, cut the butter into the dry ingredients until the mixture resembles coarse crumbs with some pea-sized pieces of butter still visible. Don’t overmix; you want those little butter pockets to create pockets of crispiness.1/2 cup (1 stick) cold unsalted butter, cut into small cubes
- Evenly sprinkle the oat crumble mixture over the top of the berry filling in the baking dish. Ensure the entire surface of the berries is covered with the crumble.
- Place the baking dish on a baking sheet (this catches any potential berry drips) and bake in the preheated oven for 35-40 minutes, or until the topping is golden brown and crisp, and the berry filling is bubbly around the edges.
- Once baked, carefully remove the Triple Berry Crisp Oat Crumble from the oven. Let it stand for at least 10-15 minutes before serving. This allows the filling to set slightly, making it easier to serve and preventing it from being scalding hot.