Is brownie pudding the same as chocolate self-saucing pudding?
Very close. Brownie pudding is basically a self-saucing chocolate pudding with a more brownie-like top. The batter bakes into the top layer while the cocoa-sugar topping and hot water turn into a sauce underneath.
Why do you pour hot water on top? It looks wrong.
It absolutely looks like you are about to ruin dessert. You are not. The hot water dissolves the cocoa and brown sugar topping, then sinks during baking to create that pudding sauce layer. Do not stir after you add the water.
Does cocoa type matter?
You can use natural unsweetened or Dutch-process cocoa here. Natural cocoa gives a slightly sharper chocolate flavor, and Dutch-process leans deeper and smoother. Either one will still give you the magic sauce situation.
Can I use a metal pan instead of glass or ceramic?
Yes. Metal conducts heat faster, so start checking a few minutes early. You want the center set on top, but still soft underneath. If you bake until it looks fully firm throughout, you will lose some of the gooey magic.
What other pan sizes work?
An 8-inch round works well with a similar bake time. A 9x9-inch will be a bit thinner and may bake a little faster. Avoid much larger pans unless you want a thin layer and less sauce per scoop.
How hot should the water be?
Hot is the goal, not raging. Use water that is very hot (steaming), but it does not need to be a full boil. Pour gently so you do not disturb the topping too much, and do not stir.
How do I know when it is done?
The edges should look set and slightly pulled from the sides, and the top should look like a baked brownie. The center can still look a little soft. If you want a quick test, stick a toothpick into the top cake layer only. You want moist crumbs, not wet batter. Think “spoonable,” not “sliceable.”
Can I make it dairy-free?
Yes, with a couple smart swaps. Use an unsweetened, higher-fat non-dairy milk like oat or soy. For the butter, choose a bar-style vegan butter (the kind meant for baking) for the most reliable texture. The sauce should still form, but results can vary a little by brand.