2 cups chocolate chips
1 cup creamy peanut butter, divided
1/3 cup powdered sugar
3 cups Rice Krispies cereal

In small heavy saucepan over low heat, heat morsels and 3/4 cup of the peanut butter, stirring constantly until smooth; remove from heat. Add powdered sugar; stir vigorously until smooth. Place cereal in large bowl. Add 1 cup of the melted chocolate mixture; stir until all cereal is coated. Place on un-greased baking sheet. Using small metal spatula, shape into 10-inch circle with slightly raised 1-inch wide border. Pour remaining melted chocolate mixture in center of circle; spread to border. 

For spider web: 

Place remaining 1/4 cup peanut butter in freezer-weight re-closable plastic bag. Cut tiny corner from bag; squeeze to pipe concentric circles on top of chocolate. Using wooden pick or tip of sharp knife, pull tip through peanut butter from center to border. Chill for 30 minutes or until firm. Cut into wedges. 

Makes 12-16 servings.