Combine homemade caramel, which you can make in about the time it takes to soften a pint of vanilla ice cream, with butter, peanuts and popcorn to make this caramel crunch.
Put popcorn (popped from 1/2 cup kernels) and peanuts in a large buttered bowl; set aside. Follow recipe for basic caramel, reducing sugar to 1 1/4 cups (do not reduce water). Remove caramel from heat, and use a clean wooden spoon to gently stir in butter and salt (caramel will bubble); stir until smooth. Pour caramel over popcorn, stirring to coat. Stir mixture every few minutes until cool. Store in an airtight container up to 1 week.
Single servings of caramel crunch pack well in cellophane bags. Place parchment between layers of brittle to prevent sticking.