Please,.... tell me I can pour condensed milk or something to help moisten it. It's a very rich chocolate cake.
I have been in your shoes, and sure you can use condensed milk or a tres leches mixture to keep it moist, but the burnt taste will still remain... I tried several different things and the results always came out the same...my sons like to bake cakes and cupcakes and they get burnt etc, and I try to save it, but like I said the taste is still there...burnt tastes bad.... maybe someone else can tell you something else.....
If it's for family, you can cut off the burnt parts plus a little more. Otherwise, I'm afraid you'll need to bake another one.
a little overbaked can be saved. Burnt is burnt and you'll need to rebake.
urrrghh... I could kick myself in the a**.