1Heat oven to 375°F (350°F for dark or nonstick cookie sheet). In medium bowl, stir chocolate chip cookie mix, butter and 1 of the eggs until soft dough forms. Place dough on ungreased cookie sheet. Place 10-inch sheet of waxed paper over dough; with rolling pin, roll dough to 10x9-inch rectangle, about 3/8 inch thick.
2Bake 15 to 19 minutes or until deep golden brown. Cool 15 minutes. Break cookie into quarters; place on large plate. Freeze uncovered 15 minutes or refrigerate 30 minutes. Break up chocolate chip cookie into small pieces; set aside.
3Reduce oven temperature to 325°F. In large bowl, stir (or mash together by hand) peanut butter cookie mix, water, oil and remaining 2 eggs until soft dough forms. Stir in peanuts and broken chocolate chip cookie pieces. Drop dough by 1/4 cupfuls about 2 inches apart onto ungreased cookie sheet.
4Bake 15 to 19 minutes or until light golden brown. Cool 5 minutes; remove from cookie sheet to cooling rack.