Save This Blueberry Peach Crumble brings together fresh or frozen blueberries and sliced peaches tossed with sugar, cornstarch, lemon and vanilla, spread in a baking dish and finished with a coarse oat, flour and butter crumble. Bake at 180°C (350°F) for about 35–40 minutes until bubbly and golden. Serve warm with vanilla ice cream or whipped cream. Swap nectarines or apples, add nuts for texture, or use gluten-free oats and flour if needed.
August in my kitchen smells like peaches so ripe they barely survive the walk from the farmers market bag to the counter, and that is exactly how this crumble was born one sweltering Sunday when I refused to turn on the stove for anything else. Blueberries and peaches landed in a baking dish out of sheer desperation and available produce. The buttery oat crumble on top was my grandmother's move, always generous with the topping because, as she said, the fruit earns its crust.
I served this at a backyard dinner last September when the evenings were just starting to cool, and my friend Laura ate two helpings before dinner was even cleared from the table. She claimed she was quality testing, but I saw her go back for a third scoop when she thought nobody was looking. That is the highest compliment a dessert can receive.
Ingredients
- Blueberries (2 cups fresh or frozen): They burst into little pockets of tartness that cut through the sweetness of the peaches beautifully.
- Peaches (3 cups sliced, peeled): Ripe but not mushy peaches give you that soft, saucy filling, and frozen works just fine if fresh are not in season.
- Granulated sugar (1/3 cup): Just enough to coax the juices out of the fruit without turning it into candy.
- Cornstarch (2 tbsp): This is what thickens the bubbling juices into a glossy sauce rather than a soupy mess.
- Lemon juice (1 tsp): A squeeze of brightness that wakes up every flavor in the dish.
- Vanilla extract (1/2 tsp): It rounds everything out and adds a warmth that ties the fruit and crumble together.
- All-purpose flour (3/4 cup): The structural backbone of your crumble topping, giving it body and bite.
- Rolled oats (3/4 cup): Old-fashioned oats give you that chewy, rustic texture that makes a crumble feel like home.
- Light brown sugar (1/2 cup, packed): Deep caramel notes that white sugar simply cannot replicate.
- Ground cinnamon (1/2 tsp): Just a whisper of spice that makes the whole kitchen smell incredible.
- Salt (1/4 tsp): Do not skip this, because salt makes every sweet thing taste sweeter.
- Unsalted butter (1/2 cup, cold and cubed): Cold butter is nonnegotiable here, since it creates those irresistible flaky pockets in the topping.
Instructions
- Preheat and prep:
- Set your oven to 180 degrees Celsius (350 degrees Fahrenheit) and grease a 23 centimeter baking dish so nothing sticks when you try to serve later.
- Toss the fruit:
- In a large bowl, gently tumble the blueberries, peach slices, sugar, cornstarch, lemon juice, and vanilla together until every piece of fruit is coated and glistening, then spread it evenly into your dish.
- Build the crumble:
- In a separate bowl, stir together the flour, oats, brown sugar, cinnamon, and salt, then drop in the cold cubed butter and work it with your fingers or a pastry cutter until the mixture looks like coarse, shaggy crumbs with some larger bits scattered throughout.
- Top and bake:
- Scatter the crumble mixture generously over the fruit, letting some pieces clump naturally, then slide it into the oven for 35 to 40 minutes until the top is deeply golden and the fruit is bubbling up around the edges.
- Rest and serve:
- Let it sit for about ten minutes so the juices settle into a syrupy sauce, then serve warm with a scoop of vanilla ice cream melting lazily on top.
Save There is something about pulling a bubbling dish of fruit and crumble from the oven that makes a regular weeknight feel like a celebration. It is unpretentious, generous, and impossible to serve without smiling.
Swapping the Fruit
Nectarines are an easy one for one swap for the peaches, and honestly you could branch out to sliced apples or plums when summer fades. The cornstarch amount stays the same regardless of the fruit you choose, so trust the formula and experiment freely with whatever looks good at the market.
Making It Gluten Free
Certified gluten free oats and your favorite gluten free flour blend work perfectly here with no other changes needed. I have tested this with almond flour as well, and while the topping is slightly more tender and less crunchy, it still disappears just as fast from the pan.
Serving and Storing
This crumble is best the day it is baked, when the topping has maximum crunch and the fruit is at its jammiest, but it reheats beautifully the next day in a low oven. If you are making it ahead for a gathering, bake it fully and warm it gently before serving so the crumble topping comes back to life.
- Add half a cup of chopped pecans or walnuts to the topping for a nutty crunch that takes it over the top.
- A dollop of lightly sweetened whipped cream works just as well as ice cream if you want something lighter.
- Leftovers keep covered in the refrigerator for up to three days, though in my experience they rarely last that long.
Save Some desserts demand precision and patience, but this one just asks you to show up with good fruit and butter. That is a deal worth taking any day of the week.
