Iris dan Panggang Kue Pretzel Karamel Bourbon

Bahan-bahan (24 porsi)

• 2 sticks (1 cup) salted butter, at room temperature
• 1 cup packed light or dark brown sugar
• 3 tablespoons bourbon ((optiona))
• 1 teaspoon vanilla extract
• 1 egg, at room temperature
• 2 1/2 cups all-purpose flour, plus an additional 2-4 tablespoons, if needed
• 3/4 teaspoon baking soda
• 1/2 teaspoon kosher salt
• 1 cup chopped pretzels
• 1 (10 ounce) bag caramels, unwrapped, or use homemade caramel ((recipe below))
• 1 tablespoon heavy cream
• 1 1/2 cups semi-sweet or milk chocolate melted