The Best Brownies
["1/2 c. vegetable oil", "1 c. sugar", "1 tsp. vanilla", "2 eggs", "1/2 c. unsifted all-purpose flour", "1/3 c. Hershey's cocoa", "1/4 tsp. baking powder", "1/2 tsp. salt", "1/2 c. chopped nuts (optional)"]
["Blend oil, sugar and vanilla in a mixing bowl.", "Add eggs. Beat well.", "Combine flour, cocoa, baking powder and salt. Gradually add to egg mixture and stir until well blended.", "Stir in nuts."]
["vegetable oil", "sugar", "vanilla", "eggs", "flour", "cocoa", "baking powder", "salt", "nuts"]