COOK corn syrup and sugar together in a large pan over medium heat, stirring to dissolve sugar. Bring mixture to a boil. (or in a 1-quart microwave-safe bowl; microwave on HIGH (100%) for 2 to 2-1/2 minutes until syrup boils). Remove from heat. STIR in baking soda and vanilla until blended thoroughly. Stir in 1 cup chocolate chips until completely melted and smooth. Add cereal and stir to coat. POUR into greased 13 x 9-inch pan and pat into place. TOP with peanut butter chips and 1/4 cup mini chocolate chips, then press down. COOL and cut into squares. Store in tightly covered container for up to 2 days.