Make this recipe a recipe that people in that category can eat. categories: ['low_fat'], recipe: preheat oven to 350f degrees. butter a 13x9 pan and set aside. in a saucepan over low heat, melt together the 4 squares of chocolate and the butter. remove from heat. (you could also do this in the microwave.) in a mixing bowl, beat together eggs and sugar. add vanilla and pour in chocolate mixture; blend thoroughly. in another bowl, combine the flour, baking powder and salt. gradually add to chocolate mixture, beating well. stir in chocolate chips and reese's pieces. spoon batter into prepared pan and bake for 40-45 minutes, or until dry on top and almost firm to the touch. remove from oven and let cool slightly before cutting into squares.

Target recipe: preheat oven to 350°. spray an 8-inch square baking pan with non-stick cooking spray. in small saucepan, melt margarine and set aside to cool. in mixing bowl, stir together flour, cocoa, baking powder and salt. in separate bowl, beat egg and egg whites with an electric mixer. whisk sour cream and vanilla into cooled margarine. beat in the sugar. thoroughly beat in egg mixture; pour over dry ingredients and beat well. pour batter into pan. bake until knife inserted in center is fairly clean, 20 to 25 minutes. cool before cutting.