Butterscotch Brownies
["1 stick margarine", "2 c. brown sugar, firmly packed", "2 eggs, well beaten", "1 1/2 c. flour", "2 tsp. baking powder", "1/4 tsp. salt", "1 tsp. vanilla", "1/2 c. or more chopped nuts"]
["In a medium saucepan melt margarine and brown sugar over low heat and bring to bubble stage.", "Continue cooking for 5 minutes. Remove from heat and add eggs (all at one time), stirring rapidly. If lumps occur, return to heat and continue to beat.", "Add dry ingredients and stir.", "Add vanilla and nuts.", "Pour into a greased 8 x 12-inch pan.", "Bake at 350\u00b0 for 18 minutes.", "Cool and cut into squares."]
["margarine", "brown sugar", "eggs", "flour", "baking powder", "salt", "vanilla", "nuts"]