This decadent, deep-dark chocolate cake features a moist, tight crumb paired with an addictive roasted cocoa nib crunch for contrasting textures. It is the ultimate indulgence for true dark chocolate aficionados seeking a sophisticated twist on a classic.
Store leftovers in an airtight container at room temperature for up to 3 days. For a more intense flavor, make the cake one day ahead to let the chocolate notes deepen. You can substitute buttermilk with a mix of 3/4 cup milk and 1 tsp lemon juice if needed.