Ingredients
Equipment
Method
Prep and preheat
- Preheat the oven to 350°F, then grease a 9x13 baking dish. Arrange it on a sheet pan for easy handling while baking.
Make the fruit filling
- Toss the strawberries and peaches with granulated sugar, cornstarch, lemon juice, and vanilla extract. Spread the mixture evenly in the prepared baking dish so the fruit is level for even bubbling.
Make the oat crumble topping
- Combine the rolled oats, all-purpose flour, brown sugar, cinnamon, and salt. Cut in the cold butter with fingertips until the mixture resembles coarse crumbs with pea-sized pieces.
- Sprinkle the crumble topping evenly over the fruit. Make sure the topping reaches the edges so it caramelizes at the boundaries.
Bake and serve
- Bake at 350°F for 38-42 minutes, until the topping is deep golden brown and the fruit is bubbling thickly around the edges. Look for a set, glossy fruit layer pushing up through the crumble.
- Cool for 10 minutes to let the filling thicken slightly. Serve warm with vanilla ice cream on top so it melts over the crisp.
Notes
For the thickest filling, keep the butter cold and aim for pea-sized crumble pieces—this helps the topping go golden without turning sandy. Store leftovers covered in the refrigerator up to 4 days; rewarm in a 325°F oven until just heated through. Freezing is not recommended because the fruit topping can soften after thawing. For a dairy-light option, use a plant-based butter substitute with a similar fat content.
