Line an 8 inch x 4 inch loaf pan with parchment paper, leaving some overhang for easy removal later.
Add chocolate chips to a large microwave safe mixing bowl. Heat in 15-30 second intervals, stirring in between with a spatula, until chocolate is completely melted and smooth. Let the chocolate cool slightly, about 5 minutes.
Add the pumpkin puree to the melted chocolate. Make sure your pumpkin puree is room temperature. If it is too cold, it will cause the chocolate to seize. Stir the pumpkin in with a spatula until is fully and evenly incorporated.
Transfer the fudge into your lined baking loaf pan. Use an offset spatula to smooth and even the surface.
Place the fudge into the fridge until firm (around 3-4 hours). Cut fudge into approximate 1 inch squares with a large sharp knife. Keep fudge chilled in the fridge until ready to eat. Leftover fudge should be stored in an airtight container in the fridge.
Notes
I used Nestle semisweet chocolate chips.* You can also use dark chocolate chips. Avoid milk or white chocolate, which will make the fudge too soft.
The nutrition information provided are only estimates based on an online nutritional calculator. This is not a comprehensive list of all the nutrients in the recipe (i.e., does not include vitamins, cholesterol, etc). I am not a certified nutritionist. Please consult a nutritionist or doctor for accurate information and any dietary restrictions and concerns you may have.