When I was young, my mom used to make that chocolate "wacky cake" recipe where you make the three holes in the top and pour different things in the holes. This is even faster (no need to dig holes), makes a cake just the right size for a small celebration, can be made dairy-free, and is so idiot-proof that it would make history out of all those jokes about inept newlyweds and other kitchen-phobes baking burned and fallen cakes. Somebody should have given a copy to Arthur too when he was trying to make a cake for his grandma. ("It says put in 1 lb. flour. What's a lub?")
2011 Update: In case anybody wonders if you can bake this recipe as cupcakes...yes! you can! This recipe makes about ten medium-sized cupcakes; you can double it to make more. Bake about 15 minutes at 350 degrees; test with toothpick.
Small Chocolate Cake, from The Kissing Bridge Cookbook by Marcella Wittig Calarco
1 cup brown sugar
1/4 cup cocoa
3 tablespoons butter or margarine
1 cup flour [You might need a little more flour, as much as 1/2 cup more]
1 teaspoon baking soda
1 teaspoon baking powder
1 cup boiling water
1 teaspoon vanilla
In a large bowl, beat the egg, and beat in the sugar, cocoa and butter until smooth. Add the flour, soda and baking powder and mix well. Pour in the boiling water and vanilla and mix. Pour the batter into a greased and floured 8 inch square pan. Bake at 350°F, 20 to 25 minutes or until it tests done. Leave it in the pan and frost with your favorite frosting.
This cake has had many incarnations at the Treehouse. It was used for Mr. Fixit's Brown Dirt Birthday Cake, frosted with chocolate icing and covered with chocolate cookie crumbs for dirt. Last December it was our Dance Recital and Starting Advent Cake. I was making chocolate chip icing for it (on the stove) but it was kind of thin, so I stirred in some mini marshmallows, thinking they'd melt, but they didn't really. I spread the icing on the cake with all the marshmallows sticking out of it, and it got oohs and ahs from the Squirrelings. ("Like a hot chocolate cake!")
And now you have the recipe too, so there's no reason to go wacky if you have to make a cake.