1. Preheat the oven to 350°. Beat butter at medium speed of an electric beater until creamy. Gradually add sugars, beating well. Add eggs and vanilla, beating well.
2. Combine flour and next 3 ingredients, stirring well. Add to butter mixture, beating at low speed just until blended.
3. Stir in candy bars, chocolate chunks, and nuts. Drop dough by heaping tablespoonfuls 1 1/2" apart onto ungreased cookie sheets.
4. Bake at 350° for 10 minutes or until lightly browned. Let cool slightly on cookie sheets; remove to wire racks, and let cool completely.
For an easy way to remove the skins from hazelnuts, cook them with 1 teapsoon baking soda in boiling water 30 to 45 seconds. Drain the nuts; rub them with a dish towel, and the skins will come right off. Make sure you dry them completely before toasting.