Butter the bottom of your pan. Place the butter and marshmallows in large saucepan and heat until smooth. Add the pudding dry mix and continue to stir for about one minute. Stir in cereal press gently and evenly. Let set for 15 minutes and then cut out 15 hearts. Drizzle melted white chocolate on top of heart and press a Reeses heart on top. Let is set then wrap and give to the ones you love!