Ingredients
Equipment
Method
Prep and mix dry ingredients
- Preheat oven to 350°F and grease a 9x13 inch baking pan with a thin, even coat so the cake releases cleanly. Set the pan aside while you mix.
- Whisk together all-purpose flour, granulated sugar, unsweetened cocoa powder, baking soda, baking powder, salt, cinnamon, and cayenne pepper until the cocoa looks evenly distributed with no dark streaks.
Mix wet ingredients and bake
- Beat together eggs, cooled strong brewed coffee, vegetable oil, buttermilk, and vanilla extract until smooth and uniform in color.
- Fold the wet mixture into the dry ingredients until just combined, stopping as soon as you no longer see dry flour for a tender crumb.
- Pour the batter into the prepared 9x13 pan, then bake at 350°F for 30-35 minutes until a toothpick comes out clean in the center.
Poke, glaze, and chill
- While the cake is still warm, pierce all over with a fork so steam channels form and the glaze can soak in.
- Combine sweetened condensed milk and chocolate syrup, then pour evenly over the warm cake so the top becomes glossy and drippy.
- Let cool completely, then refrigerate for 30 minutes so the glaze sets and slices cleanly.
Finish and serve
- Spread whipped cream over the chilled cake and top with chocolate shavings so the surface looks finished and speckled with cocoa.
- Slice and serve, aiming for moist, sauce-soaked layers visible on the plate with the chocolate drip.
Notes
For the best soak, poke the cake immediately after it comes out of the oven (warm, not hot), and drizzle the condensed milk mixture slowly so it absorbs rather than running off. Store covered in the refrigerator up to 3 days; freeze baked cake without the whipped cream for up to 2 months (thaw overnight in the fridge, then add whipped cream and shavings). For a lighter option, swap whipped cream for whipped coconut cream while keeping the chocolate drizzle the same.
