Preheat oven to 350 degrees F (175 degrees C). Lightly grease one 8x12 inch pan.
In a large bowl, cream together 1 cup of the white sugar with 1 cup butter. Add the eggs and beat well. Mix in the flour, baking soda, baking powder, and sour cream, stir until just combined.
Pour 1/2 of the batter into the prepared pan then sprinkle with 3/4 of the filling. Pour the remaining cake batter on top and sprinkle top with the remaining filling. Bake at 350 degrees F (175 degrees C) for 40 minutes.
To Make Filling: Combine chopped nuts, ground cinnamon, and 3/4 cup white sugar and mix well.
