1Heat oven to 350°F. In medium bowl, mix Bisquick mix and powdered sugar. Cut in butter, using pastry blender or fork, until mixture is crumbly. Stir in hot water. In ungreased 8-inch or 9-inch square pan, press mixture firmly on bottom.
2Bake 15 to 20 minutes or until set and golden brown around edges.
3In 1-quart saucepan, heat whipping cream and peanut butter chips over medium heat, stirring constantly, until smooth. Pour over baked crust; spread evenly. Sprinkle with peanuts. Refrigerate at least 2 hours until set. For 25 bars, cut into 5 rows by 5 rows.