Instructions: Preheat the oven according to the package directions; bake pie for 45 minutes.

In a medium bowl, combine the brown sugar, flour, and cinnamon; mix well. With a fork, cut in the butter until the mixture is crumbly. Stir in the walnuts.

Remove the pie from the oven and sprinkle evenly with the streusel topping. Continue baking for 25 to 30 minutes, or until a knife inserted in the center comes out clean; serve.

This recipe yields 6 servings.

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