It's been over 90 deg. here for several days.
To ease the air conditioner burden in the house, I've done much of the cooking on the gas grill.
With a little experimenting it makes a good oven.
Haven't tried a cake yet though. :)
I am an oddball, I have always felt electricity to be more he-man stuff than fire, because fire usually can't kill you with a touch.
I haven't tried baking a cake on a grill either, what I do is put some sliced fresh fruit, brown sugar, butter, some lemon and/or lime juice and spice (one or more of: fresh ground allspice, cinnamon, nutmeg, fresh ground cardamom) on a double wrap of heavy duty foil and toss it on the grill when the meat is done. When you are ready for dessert, spoon the fruit (still hot) over vanilla ice cream.
Yeah, I just got one with a side-burner, so I'll even boil water for pasta outside, on a hot day.
I have made pizza on mine. Used a little half spent charcoal, it wasn't that bad.