Chocolate Chip Brownies
["1 c. sugar", "2/3 c. margarine", "2 eggs", "1 tsp. vanilla", "1 (12 oz.) pkg. Nestle semi-sweet chocolate, divided", "1 1/4 c. flour", "1 c. Quaker oats (Quick or old fashioned), uncooked", "1 tsp. baking powder", "1/2 c. chopped nuts (optional)", "powdered sugar"]
["Heat oven to 350\u00b0.", "Lightly grease 13 x 9-inch baking pan. Beat sugar, margarine, eggs and vanilla until smooth.", "Add one cup chocolate, melted.", "Mix well.", "Add flour, oats, baking powder, remaining 1 cup chocolate and nuts, mixing well."]
["sugar", "margarine", "eggs", "vanilla", "semi-sweet chocolate", "flour", "oats", "baking powder", "nuts", "powdered sugar"]