1 hour and 10 minutes
You can substitute nectarines for the peaches and skip the peeling.
3 1/2 to 4 pounds peaches
1 pint blackberries ( 1/2 pound)
1 teaspoon cinnamon
2-3 tablespoons brown sugar
1 cup plus 1 tablespoon flour, divided
1 teaspoon lemon juice
1/2 cup sugar
1/2 teaspoon salt
1/2 cup (1 stick) cold butter, cut into chunks
1. Heat the oven
to 350 degrees.
2. Peel the peaches:
Bring a large pot of water to a boil. Cut a shallow X in the bottom of each peach, and blanch it quickly in the boiling water until you see the peel start to lift away from the peach. The blanching time required will vary depending on the ripeness of the peach. Transfer it to a bowl of ice water to stop the cooking, and peel away the skin with your fingers. If the peel proves difficult to remove, simply return the peach to the boiling water and try again. If after 5 minutes of blanching, the peaches are still not peeling easily, use a small paring knife to scrape away the skin.
3. Pit the peach
by cutting it in half, following the cleft that runs down one side. Twist and the flesh will separate. Discard the pit and cut the peach into bite-size pieces. You should have about 7 to 8 cups of peeled, pitted, cut-up peaches.
4. Place the peaches
in a bowl with the blackberries, cinnamon, brown sugar, 1 tablespoon flour and the lemon juice and stir gently to combine. Set aside while you make the topping.
5. In a food processor,
briefly pulse together the sugar, salt and remaining 1 cup of flour just to combine. Distribute the chunks of butter over the top and pulse just until the mixture resembles wet, clumpy sand.
6. Dump the peach mixture
into a 2-quart baking dish or gratin dish and give it a good shake to make sure it's evenly distributed. Spoon the crumbly mixture over the top, distributing it evenly. Bake until the top is crusty and brown and the peaches are soft, about 45 minutes.