Notes: Prepare Sunset's Favorite Pie Pastry or the Sunglow Pie Pastry, or use 1 package (15-oz.) refrigerated pastry and follow steps 5 and 6 of the Sunset recipe to line pan, position top crust, and flute edges.
1 cup sugar
1/4 cup cornstarch
2 tablespoons butter or margarine, melted and cooled
5 cups mixed fresh berries (1 1/4 cups each blackberries, blueberries, raspberries, and 1/4-inch-thick slices of strawberries), rinsed and drained
In a bowl, mix sugar, cornstarch, and butter. Gently stir in berries.
Scrape berry mixture into unbaked bottom crust in pan. Cover with top crust and flute edges. Line a 12-inch pizza pan or a 10- by 15-inch baking pan with foil (to catch drips) and set pie on foil.
Bake on bottom rack of a 375° regular oven or 350° convection oven until filling bubbles in center (check through cutout or slits), 45 to 55 minutes in regular oven, about 1 1/2 hours in convection. If crust browns too quickly (check after 40 minutes), cover pie loosely with foil.
Let pie cool on a rack at least 3 hours. Cut into wedges and serve, or chill airtight up to 1 day.