Ingredients
1 sheet frozen puff pastry
all-purpose flour
3/4 c. ground toasted walnuts
3 tbsp. light-brown sugar
2 tbsp. cornstarch
salt
1 large egg
4 apricots
12 oz. fresh blackberries
1/4 c. granulated sugar
Preparation
Step 1Preheat oven to 425 degrees F. Roll out pastry to a 13-by-15-inch rectangle on a lightly floured surface; trim edges with a knife. Transfer to a baking sheet; freeze for at least 30 minutes or overnight.Step 2Combine walnuts, brown sugar, cornstarch, and 1/4 teaspoon salt. Brush pastry with egg wash, avoiding edges so that egg doesn’t drip over sides. Score a line around edge of pastry using a knife to create a 3/4-inch border (do not cut all the way through). Cover center with walnut mixture. Arrange apricots and blackberries on top. Sprinkle with granulated sugar.Step 3Bake for 10 minutes. Reduce oven temperature to 400 degrees F. Bake until pastry is golden brown and fruit is soft, about 30 minutes more. Let cool.
