Blueberry sour cream pie - chinese grandma

Ingredients

• 1 unbaked pie crust – your favorite recipe or store-bought (Trader Joe’s has a good one in the frozen section)
• 1 cup sour cream (low fat versions work just as well)
• 1/2-3/4 cup sugar (more for tart berries, less for sweet)
• 2 1/2 tablespoons flour
• 1 egg, beaten
• 3/4 teaspoon almond extract
• 1/4 teaspoon salt
• 3 cups fresh blueberries
• 1/3 cup flour
• 2 tablespoons sugar
• 1/4 cup (1/2 stick) cold butter, cut into pieces
• 1/3 cup chopped pecans