A classic Southern self-saucing chocolate cobbler with a crisp cake-like top and a molten hot-fudge sauce underneath—made by layering batter, cocoa-sugar topping, and hot water (no stirring).
Add the butter to a 9x9-inch pan or baking dish and set in the oven to melt while the oven preheats. If you start to hear it pop and sizzle, remove the pan from the oven.
Mix the cocoa batter and the sauce topping
Mix the batter for the first layer: In a large bowl, whisk together the flour, sugar, cocoa powder, salt, and baking soda. Pour in the buttermilk and vanilla extract and mix with a rubber spatula until smooth. The batter will be thick.
Mix the ingredients for the chocolate sauce: In a small bowl, whisk together the brown sugar and the cocoa powder.
Assemble the layers, no stirring
Assemble the cobbler: When the oven has preheated and the butter has melted, remove the pan from the oven. Pour in the chocolate biscuit batter and use the spatula to spread it into an even layer.
Sprinkle the brown sugar and cocoa mixture evenly over the batter.
Slowly pour the hot water over the top. Do not stir.
Bake, then rest for the sauce to set
Bake the cobbler until the edges are bubbling and the center is just barely set, 35 to 40 minutes. The center will bounce back when lightly pressed. Don’t overbake.
Allow the cobbler to cool and set slightly for 5 to 10 minutes before serving warm. Spoon servings into bowls and top with a scoop of vanilla ice cream, if desired.
Notes
Pour the hot water slowly and gently, and do not stir—this is what keeps the cake-like top and molten sauce underneath.Nutrition information is estimated based on common ingredients and serving sizes and may vary.