This peach and berry crumble turns ripe late-summer fruit into a warm, bubbling dessert beneath a crisp oat topping. It is easy to assemble, flexible with whatever fruit is on hand, and delicious served warm with cold vanilla ice cream.
Ingredients
- 6 cups sliced ripe peaches, about 6 medium peaches
- 1 cup blueberries or blackberries
- 2 tablespoons granulated sugar, for the fruit
- 1 tablespoon lemon juice
- 1 tablespoon cornstarch
- 1 teaspoon vanilla extract
- 1 cup old-fashioned rolled oats
- ¾ cup all-purpose flour
- ⅔ cup packed light brown sugar
- ½ teaspoon ground cinnamon
- ¼ teaspoon fine salt
- ½ cup (113 g) cold unsalted butter, cut into small cubes
- Vanilla ice cream or whipped cream, for serving (optional)
Instructions
- Heat the oven to 375°F (190°C). Set a rack in the center. Lightly butter a 2-quart baking dish, or use an 8-inch square dish. Place the dish on a rimmed baking sheet in case fruit juices bubble over.
- Prepare the peaches. If their skins are thick or fuzzy, peel them; otherwise, leaving the skins on is fine. Remove the pits and cut the peaches into roughly ½-inch slices. Add them to a large bowl with the berries, granulated sugar, lemon juice, cornstarch, and vanilla. Toss gently until the fruit is evenly coated, then spread it in the baking dish.
- Make the topping. In a medium bowl, stir together the oats, flour, brown sugar, cinnamon, and salt. Add the cold butter cubes. Rub the butter into the dry ingredients with your fingertips, or work it in with a pastry cutter, until the mixture forms uneven clumps with some pea-size pieces. Avoid melting the butter; cold pieces help the topping bake up crisp.
- Scatter the crumble mixture evenly over the fruit. Leave a few small gaps rather than pressing the topping into a solid layer, so steam can escape as the fruit cooks.
- Bake for 40–50 minutes, until the topping is deeply golden and fruit juices are bubbling around the edges. If the topping browns too quickly, loosely tent the dish with foil for the final 10 minutes. The bubbling is important: it indicates the filling has heated enough for the cornstarch to thicken.
- Set the dish on a cooling rack and rest for at least 20 minutes before serving. The fruit filling will be very hot straight from the oven and will thicken as it cools. Serve warm, with ice cream or whipped cream if you like.
Tips
- Use ripe but still-firm peaches. Very soft fruit can turn watery; if yours are exceptionally juicy, increase the cornstarch to 1½ tablespoons.
- Frozen berries work well. Add them straight from the freezer rather than thawing, and expect the crumble to need about 5–10 extra minutes in the oven. Check for bubbling at the edges before taking it out.
- For a gluten-free crumble, use certified gluten-free oats and replace the all-purpose flour with a measure-for-measure gluten-free baking blend. Check that your other ingredients are labeled gluten-free if needed.
- Keep the butter cold and stop mixing once clumps form. Soft or melted butter can make the topping greasy and compact instead of crumbly.
Serving Suggestions
Serve the crumble warm, not piping hot, so the fruit has time to settle and the topping stays crisp. A scoop of vanilla ice cream gives a classic hot-and-cold contrast; lightly sweetened whipped cream, plain yogurt, or crème fraîche is also good if you prefer less sweetness. For a relaxed summer dessert, set the baking dish on the table and spoon portions into bowls. Add the topping just before serving if you want extra crunch.
Variations
Swap some or all of the peaches for nectarines, plums, or sliced ripe pears. Keep the total fruit close to 7 cups so the filling-to-topping balance stays right. A cup of raspberries can replace the blueberries or blackberries, though raspberries break down more as they bake. For a little extra warmth, add ¼ teaspoon ground ginger or cardamom to the fruit. You can also replace ¼ cup of the oats with chopped almonds or pecans, provided they are safe for everyone eating.
Storage and Reheating
Cool leftovers promptly, then cover and refrigerate within 2 hours of baking. Store for up to 4 days. For the best topping texture, reheat uncovered in a 350°F (175°C) oven for 15–20 minutes, or until hot throughout; individual portions usually need 30–60 seconds in the microwave, though the topping will soften. Do not leave the crumble at room temperature for more than 2 hours, or more than 1 hour when the temperature is above 90°F (32°C). Freezing is possible for up to 2 months, but the fruit may be softer after thawing. Thaw overnight in the refrigerator and reheat in the oven.
Frequently Asked Questions
Do I need to peel the peaches?
No. Peach skins soften during baking and are perfectly fine to eat. Peel them if you prefer a smoother filling or the skins feel especially thick.
Can I make the crumble ahead?
Yes. Prepare the topping up to 3 days ahead and refrigerate it in a covered container. You can also assemble the fruit and topping several hours ahead and refrigerate the dish; bake it cold, allowing extra time, and wait until the filling bubbles before serving.
How can I tell when it is done?
The topping should be golden brown and the fruit juices should bubble visibly at the edges. If the topping is browned but the filling is not bubbling, cover loosely with foil and continue baking until it is hot and thickened.
Can I use canned peaches?
Fresh or frozen fruit gives the best texture. If using canned peaches, drain them very well and pat them dry; use about 5 cups, reduce the fruit sugar to 1 tablespoon, and start checking the crumble after 30 minutes because canned fruit is already soft.
Why is my filling runny?
It may need more baking or more time to cool. Make sure the juices bubbled in the oven, since the cornstarch thickens as the filling heats, and allow at least 20 minutes of resting before serving. Extra-juicy fruit may need a little more cornstarch next time.
Can I bake this in individual dishes?
Yes. Divide the fruit and topping among oven-safe ramekins set on a baking sheet. Begin checking after 25 minutes; the exact time depends on the size and depth of the dishes. Bake until golden and bubbling, then let the ramekins cool before serving.