Brownie Pudding Pie

3 TBSP. cocoa
1/4 cup butter, melted
1/4 cup sugar
2 eggs
1 tsp. vanilla
1/2 cup flour
1/2 cup nuts
6 oz. pkg instant chocolate (or other favorite flavor) pudding mix
2 1/2 cups milk
whipped topping
1 small chocolate bar

Stir cocoa and butter until smooth. Beat in sugar, eggs, and vanilla. Mix in flour and nuts. Spread in greased pie pan Bake at 350* for 30 minutes. Cool. Pour mild in mixing bowl. Add pudding mix. Beat for 1 minute. Let stand 2 minutes. Spread over brownie. Top with whipped topping. Sprinkle with grated chocolate bar.