In large bowl, beat softened butter, granulated sugar and brown sugar with electric mixer on medium speed about 1 minute or until fluffy; scrape side of bowl. Beat in dry pudding mix. Beat in eggs, one at a time, just until smooth. Stir in vanilla. On low speed, beat flour mixture into sugar mixture until well blended. Stir in crushed pretzels, chocolate chips and toffee bits until blended.