Chocolate Chip Picnic Bars
["2/3 c. margarine", "1/2 c. sugar", "1/2 c. packed brown sugar", "2 eggs", "1 tsp. vanilla", "1 (6 oz.) pkg. chocolate chips", "1 c. flour", "3/4 tsp. salt", "3/4 tsp. soda", "1 c. quick rolled oats", "1/2 c. nuts (optional)"]
["Beat margarine and sugars together until creamy.", "Beat in eggs and vanilla.", "Sift together flour, salt and soda.", "Add to creamed mixture and blend well.", "Stir in oats, chocolate chips and nuts. Spread dough into well-greased 13 x 9 x 2-inch baking pan.", "Bake in preheated 350\u00b0 oven for about 25 minutes.", "While still warm, sprinkle with sifted confectioners sugar and cut into bars."]
["margarine", "sugar", "brown sugar", "eggs", "vanilla", "chocolate chips", "flour", "salt", "soda", "rolled oats", "nuts"]