Preheat oven to 350F. Coat an 8-inch square baking pan with nonstick cooking spray; set aside. Cut chocolate into pieces and place in heat-proof bowl. Set over low heat in small skillet containing 1/2-inch simmering water. Sir occasionally until chocolate is just melted. Remove from heat; set aside. In mixer bowl combine all ingredients except flour and walnuts, beat to blend thoroughly. Mix in flour. Spread batter in prepared pan and sprinkle with walnuts. Bake about 30 minutes until springy to the touch about 2 inches around edges. Cool on rack. Cut into squares.

* can substitute jarred baby food prunes (approx 2 2/12 oz jars)

Nutritional data per serving: calories: 58 fat: 2gm calories from fat: 30% carbohydrates: 10g cholesterol: 0 sodium: 70mg fiber: 0.4gm