From The Spruce Eats webpage.
Sweet Potato Brownie Fudge is a simple recipe with just two ingredients: brownie mix and sweet potato (or pumpkin) puree. The resulting fudge bites are dense, dark chocolatey squares that are low-calorie and low-guilt. While perhaps not technically a candy, these squares are so similar to fudge in taste and texture, it'd be a shame not to share them.