A vintage grape pie recipe from grandma's 1940 cookbook.
Preheat oven to 425 degrees Fahrenheit.
Wash and slice grapes.
Place grapes in pie crust.
Combine sugar, flour, and cornstarch in small bowl.
Sprinkle sugar mixture over grapes in crust.
Cut butter into small pieces, drop pieces on top of sugar mixture.
Add top pie crust.
Bake at 425 degrees for 30-45 minutes. Checking every 5 minutes after 30 for crust doneness.
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