01 -
Wrap the sweet potato in a damp paper towel and microwave for 5 minutes, turn it over and microwave an additional 5 minutes until very soft. Alternatively, boil or roast until fork-tender.
02 -
Let the cooked sweet potato cool completely, then remove and discard the skin. Mash thoroughly until smooth and creamy. Measure 240 grams of the mash for use.
03 -
Preheat oven to 175°C. Line a 23-centimetre square cake pan with parchment paper for easy removal.
04 -
In a large mixing bowl, combine mashed sweet potato, almond butter, eggs, maple syrup, vanilla extract, and vinegar. Stir until a thick, cohesive mixture forms. If almond butter is stiff, microwave it briefly until softened.
05 -
Add cocoa powder, baking soda, ground cinnamon (if using), and sea salt. Mix until a dense, uniform batter forms. Gently fold in chocolate chips now if desired.
06 -
Spread the batter evenly in the prepared pan. Bake on the center rack for 23–28 minutes, or until a thermometer inserted in the center reads 88–96°C or a toothpick emerges clean.
07 -
For the optional ganache, combine chocolate chips, coconut milk, and coconut oil (or butter) in a microwave-safe bowl. Microwave in 20-second intervals, stirring between, until melted and smooth (about 1 minute total).
08 -
Spread warm ganache evenly over the warm cake. Allow to cool to room temperature before slicing. Chill in the refrigerator for faster setting. Slice and serve when cooled.