Mom'S Best Brownies
["2 c. sugar", "3 eggs", "1/2 c. cocoa", "1 1/2 c. flour", "1/2 c. pecans (if desired)", "2 sticks margarine"]
["Melt margarine in a 9 x 13-inch pan.", "Pour into mixing bowl; add remaining ingredients and mix together.", "Pour batter into same 9 x 13-inch pan and bake at 350\u00b0 for 25 to 30 minutes."]
["sugar", "eggs", "cocoa", "flour", "pecans", "margarine"]