Raspberry Sour Cream Pie

We have an abundance of raspberries right now and I wanted to make something other than plain raspberry pie.  I found this recipe at www.allrecipes.com, and it turned out really nice.  I think you could substitute any kind of fruit (peaches, like peaches and cream, would be great also).

• 2 (9 inch) unbaked pie crust
• 2 eggs
• 1 1/3 cups sour cream
• 1 teaspoon vanilla extract
• 1 cup white sugar
• 1 pinch salt
• 1/3 cup all-purpose flour
• 3 cups raspberries
•  
• 1/2 cup brown sugar
• 1/2 cup all-purpose flour
• 1/2 cup chopped walnuts (I left out the walnuts because my family doesn't care for nuts)
• 1/4 cup butter, chilled

1. Preheat oven to 400 degrees F (200 degrees C).
2. In a large bowl, beat eggs until light and lemon colored. Whisk in sour cream and vanilla. In a separate bowl, mix sugar, flour and salt together. Stir into egg mixture. Gently fold in raspberries. Divide into 2 unbaked pie crusts.
3. Bake in preheated oven for 30 to 35 minutes, or until the center begins to set. Sprinkle with topping and return to oven for 10 to 15 minutes, or until topping is golden brown. Allow to cool before serving.
4. To make the topping: In a medium bowl, mix together brown sugar, flour and chopped nuts. Cut in butter until crumbly.