Step 1

Slip skins from grapes, set skins aside. Bring pulp to boil; reduce heat and simmer 5 minutes. Press through a sieve to remove seeds. Add skins to the pulp.

Step 2

Combine sugar, AP flour, and salt. Add lemon juice, butter, and the grape mixture. Pour into unbaked pie shell.

Step 3

Combine the topping ingredients until crumbly. Sprinkle over pie.

Step 4

Bake in 400-degree oven for about 40 minutes.