Heat oven to 350F degrees. Using a spoon, stir eggswith sugar and vanilla; add butter. Sift ground chocolatewith flour, baking powder, salt. Stir into egg mixture;add nuts. Spread into greased 8 or 9 inch square pan.
Bake at 350F for 20 to 30 minutes. For extra chewybrownies, use 8 inch pan and less baking time. For cake-like brownies, use 9 inch pan and longer baking. Cut intosquares.