Equipment Needed
- An 8×8 inch baking pan
- Parchment paper
- Large, heavy-bottomed saucepan (at least 3-quart capacity)
- Candy thermometer
- Wooden spoon or heatproof spatula
- Pastry brush and small bowl of water
- Baking sheet (for toasting walnuts)
Step-by-Step Instructions
First, let’s prepare our components. I spread the walnuts on a baking sheet and toast them in a preheated 350°F oven for 7-10 minutes, stirring halfway, until they’re fragrant and golden. This step is non-negotiable—it unlocks their oils and nutty depth. I let them cool, then chop them roughly. Now, I line my 8×8 inch pan with parchment paper, leaving overhangs. Then, I get my most important tool ready: the candy thermometer. I attach it to the side of my large, heavy-bottomed saucepan, making sure the tip doesn’t touch the bottom.
Now, we begin the magical transformation. In the saucepan, I combine the maple syrup and heavy cream. I stir it over medium heat until it just begins to simmer. Here’s a pro-tip I learned the hard way: before stirring, I use a pastry brush dipped in water to wash down any sugar crystals from the sides of the pan. This prevents premature crystallization and ensures a smooth fudge. Once simmering, I reduce the heat to medium-low to maintain a steady, gentle bubble. I insert the candy thermometer and let the mixture cook, without stirring, until it reaches 238°F, the soft-ball stage. This takes about 25-40 minutes. The kitchen fills with the most amazing, caramelized maple scent.
When the thermometer hits 238°F, I immediately remove the pan from the heat. I carefully take out the thermometer. Without stirring, I add the butter, vanilla, and salt right on top. Then, I let the mixture cool undisturbed until it reaches about 110°F—this feels just warm to the touch, not hot. I learned this timing mistake on my first batch: if you stir too soon, the fudge will be grainy. This cooling period is crucial for the sugars to form the right crystals. I test it by touching the side of the pan.(See the next page below to continue…)