Best Brownies
["1 c. oil", "2 c. sugar", "2 tsp. vanilla", "4 eggs", "1 c. flour", "2/3 c. unsweetened cocoa", "1/2 tsp. baking powder", "1/2 tsp. salt", "1/2 c. chopped nuts"]
["Mix all ingredients in bowl.", "Stir in nuts.", "Spread in 9 x 11-inch pan and bake at 350\u00b0", "until brownie pulls away from sides of pan, 30 to 40 minutes.", "Cool and cut in squares."]
["oil", "sugar", "vanilla", "eggs", "flour", "unsweetened cocoa", "baking powder", "salt", "nuts"]