4 cups fresh or thawed and drained frozen blackberries
3/4 cup pitted medjool dates, soaked in water for 10 minutes
and drained
1 tablespoon freshly squeezed lemon juice
Put 1 1/2 cups of the blackberries along with the dates and
lemon juice in a food processor fitted with the S blade and process until smooth.
Transfer to a medium bowl, add the remaining 2 1/2 cups of blackberries, and
stir gently until well combined.
To assemble the crisp, press 1/2 cup of the topping into an
even layer in an 8-inch square glass baking dish. Spread the blackberry filling
on top using a rubber spatula. With your hands, knead pieces of the remaining 1
1/2 cups of the topping until they stick together. Lay these pieces of topping
on the filling to form a cobbled appearance, allowing some of the filling to
peek through. Refrigerate for at least 1 hour before serving. Serve chilled, at
room temperature, or warm (see warming option). Covered with
plastic wrap and stored in the refrigerator, Blackberry Crisp will keep for 3
days.
Warming Option: Preheat the oven to 200 degrees F. Turn off
the oven, insert the crisp, and warm for 15 minutes. Alternatively, heat for 30
minutes in a food dehydrator set at 105 degrees F.
Blueberry or Cherry Crisp: Replace the blackberries
with 4 cups of fresh or thawed and drained frozen blueberries or pitted
cherries.
Peach Crisp: Replace the blackberries with 4 cups of
fresh or thawed frozen peach slices. Add 1/8 teaspoon of ground nutmeg to the
filling if desired.