Prepare the Baking Dish: Begin by lining an 8-inch square baking dish with parchment paper, allowing some excess paper on the sides for easy lifting later. Lightly grease the parchment paper to ensure a smooth release of the fudge.
Combine Ingredients in a Saucepan: In a medium-sized heavy saucepan, combine the granulated sugar, unsalted butter, heavy cream, and pure maple syrup. Stir the ingredients together over medium heat until the sugar and butter have completely melted. Once melted, increase the heat slightly and allow the mixture to come to a gentle boil.
Monitor the Cooking Process: Let the mixture boil without stirring for approximately 5-7 minutes. Use a candy thermometer to check the temperature, aiming for the soft-ball stage, which is 238°F (114°C). This temperature is crucial for achieving that perfect fudge consistency.
Infuse Flavors: Once the mixture reaches the desired temperature, promptly remove the saucepan from heat. Stir in the vanilla extract, salt, and if desired, the ground cinnamon. Mix thoroughly to ensure all ingredients are well combined.
Fold in Pecans: Carefully incorporate the chopped pecans into the fudge mixture, folding gently until they are evenly distributed throughout.
Transfer and Smooth: Pour the still-hot fudge mixture into the prepared baking dish. Using a spatula, spread the fudge evenly, smoothing the top for a beautiful finish.
Cooling Time: Allow the fudge to cool at room temperature for at least 2 hours, or until fully set. If you’re short on time, you can speed up the process by refrigerating it for about an hour.
Cut and Serve: Once the fudge has cooled and set, carefully lift it out of the pan using the parchment paper overhang. Slice the fudge into small squares or rectangles for serving.
Notes
For an elegant touch, arrange the fudge squares on a decorative plate and garnish with whole pecans and a drizzle of maple syrup.