I don't know how universal an experience this is, but when I was a kid I used to love going to Pizza Hut where they had all you can eat, and when it came time for dessert I would always get a square of chocolate cake, and I'd cover it in soft serve ice cream and marshmallows.
This brownie tastes like that cake, and I'm okay with that.
brownies like at pizza hut (australia, circa 1992)
two cups of plain flour
almost one cup of cocoa (I ran out)
one cup of castor sugar
shake of salt
one tablespoon baking powder
two or three tablespoons of canola oil
two and a bit cups of rice milk
one teaspoon lemon juice
quarter cup walnut pieces
quarter cup choc chips
some extra milk and choc chips to make the ganache/icing
Combine flour, cocoa, sugar, salt and baking powder. When it's all nicely mixed and the cocoa isn't clumping, gradually add in the milk, oil and lemon juice. Mix it all until it's smooth, then add in the walnuts and choc chips.
Pour in to a lined baking tin (I used 20cm x 20cm and it was perfect), and bake at 180C for about 25 or 30 minutes.
Let the brownies cool for a few minutes in the tray, then on a cooling rack. When it's getting pretty cool, heat a quarter cup of milk in the microwave in five or ten second bursts until it's warm, then pour in about a quarter cup of choc chips. If it's not chocolatey enough for you, add some more, and keep mixing until they're all melted. Set aside to cool for ten minutes, then pour/spread over brownie slab. Cut and eat.