Line 8- or 9-inch square baking pan with foil. Spray foil lightly with cooking spray; set aside.
In large saucepan, heat honey until boiling. Stir in peanut butter until well blended.
Remove pan from heat and stir in granola, peanuts and popcorn until coated.
Press mixture evenly into prepared pan.
Refrigerate until cool; cut into bars to serve.
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