01 - Preheat oven to 350°F (175°C). Line an 8x8 inch baking pan with parchment paper, ensuring an overhang on the sides for easy bar removal.
02 - In a large mixing bowl, cream together the softened unsalted butter and brown sugar until the mixture is light and fluffy. Incorporate the molasses and egg until thoroughly combined.
03 - In a separate bowl, whisk together the all-purpose flour, ground ginger, ground cinnamon, ground cloves, baking soda, and salt.
04 - Gradually add the dry ingredient mixture to the wet ingredients, mixing until just incorporated to form a batter.
05 - Spread the gingerbread batter evenly into the prepared baking pan. Bake for 20 to 25 minutes, or until a toothpick inserted into the center emerges clean. Allow the gingerbread layer to cool completely in the pan.
06 - In a medium bowl, combine the crisp rice cereal with the melted white chocolate and melted butter. Gently stir until the cereal is evenly coated.
07 - Evenly spread the coated cereal mixture over the cooled gingerbread base, pressing lightly to ensure it adheres.
08 - Sprinkle the crushed peppermint candies uniformly over the crunch layer, pressing gently so they stick.
09 - Refrigerate the pan for 30 minutes, or until the topping is firm. Carefully lift the entire block from the pan using the parchment paper overhang. Cut into 16 individual bars.