1Heat oven to 350°F. Spray cookie sheet with cooking spray or line with cooking parchment paper. Press cookie dough on cookie sheet.
2In large saucepan, heat sugar, water and 1 teaspoon salt to boiling over medium-high heat. Boil without stirring until mixture is amber in color, about 8 to 12 minutes. Remove from heat; slowly pour in whipping cream (mixture will sputter).
3In large bowl, toss popcorn, pretzels, candies and peanuts. Drizzle with caramel mixture; stir until well coated. Firmly and evenly press mixture on cookie dough. Sprinkle with additional salt.
4Bake 20 to 25 minutes or until cookie layer is baked. Cool completely. Cut into 4 rows by 3 rows.