1 1/2 sticks (6 oz) very cold unsalted butter, cut into cubes
12 cup sugar
1/2 tsp. salt
3 cups flour
Put butter and sugar in food processor fitted with metal blade. On pulse setting, mix for two minutes.
Add egg and salt and pulse for another two minutes til mixture is smooth.
Add flour and pulse for another minute, til mixture resembles crumbs. Remove mixture from food processor and put in sealed container in refrigerator for at least an hour before using.
Well wrapped, this dough can be stored in freezer for up to 2 months and thawed in refrigerator.
Adding this crumble to any recipe will give your pie an old fashioned taste and look. An added 1/2 tsp. ground allspice or cinnamon gives it extra flavor and aroma.