Prepare an 8x8” pan with cooking spray and 2 pieces of parchment lining all sides of the pan. In a large microwave safe bowl, add chocolate chips, butter, and pumpkin. Microwave in 30 second intervals, stirring in between, until the chocolate chips are fully melted and smooth.

Using a whisk or an electric beater, beat the mixture to ensure it is fully combined, then add in the confectioners sugar, pumpkin spice and vanilla. Beat until very smooth and combined.

Transfer the fudge into the prepared pan, then smooth out with a spatula. Place into the fridge to set for 1-2 hours, then slice into 12 or 24 squares, and optionally sprinkle with flaky sea salt.