Brownies
["1 stick margarine", "1 unsweetened chocolate baking sq.", "1 1/2 c. flour", "1/2 tsp. soda", "2 c. brown sugar, firmly packed", "2 eggs", "1 tsp. vanilla extract", "1/2 c. chopped nuts"]
["In a large bowl, melt margarine and chocolate square in microwave oven. Add remaining ingredients; blend well.", "Spread in greased 13 x 9-inch pan.", "Bake at 350\u00b0 for 25 to 30 minutes. Cool.", "Frost or sprinkle with confectioners sugar, if desired."]
["margarine", "flour", "soda", "brown sugar", "eggs", "vanilla extract", "nuts"]