1 box (10 oz.) Rice Krispies
1 pkg. (12 oz.) semi-sweet chocolate pieces
1 c. Karo light corn syrup
2 tbsp. butter
1 tsp. vanilla
3 c. miniature marshmallows

Grease 13x9x2 inch baking pan. Place cereal in large bowl. In heavy 2 quart saucepan stirring constantly, bring chocolate, corn syrup and butter to boil over low heat. Remove from heat; stir in vanilla.

Pour chocolate mixture over cereal; fold until completely coated. Fold in marshmallows. With back of greased spoon, press firmly into prepared pan. Let stand at least 1 hour. Cut into squares. Makes about 48.