Muddy Buddies

9 cups Chex cereals (Corn, Rice and/or Wheat)
1 cup semisweet chocolate chips
1/2 cup peanut butter
1/4 cup margarine
1 teaspoon vanilla extract
1 1/2 cups powdered sugar

Pour cereals into large bowl; set aside. In a 1-quart microwave-safe bowl combine semi-sweet chocolate chips, peanut butter, and margarine. Microwave on HIGH 1 to 1 1/2 minutes or until smooth, stirring after 1 minute. Stir in vanilla. Pour chocolate mixture over cereals, stirring until all pieces are evenly coated. Pour cereal mixture into a large resealable plastic bag with powdered sugar. Seal securely and shake until all pieces are well coated. Spread on waxed paper to cool. Makes 9 cups.