Toss 1/4 cup juice/cornstarch mixture with peaches and transfer to 8 or 9-inch-square or 9-10 inch greased pie plate.
While peaches are draining, combine flour, sugars, salt and vanilla in work bowl of food processor. Pulse to combine mixture. Add butter and 1/2 cup of the nuts; pulse again until mixture clumps together, about 30 seconds.
Sprinkle remaining 1/4 cup nuts over mixture and fold together. The mixture may be crumbly at this point.