2. Combine boiling water and cocoa. Stir until smooth. Set aside in the fridge to cool.
3. Cream butter, sugar, eggs, and vanilla at high speed of an electric mixer until light and fluffy (about 5 min is perfect).
4. In a separate bowl combine flour, soda, baking powder, and salt.
5. Alternately add flour.
6. Then cocoa mixture beginning and ending with flour.
7. Do not overbeat or cake will be tough!
8. Pour batter into prepared pans.
9. Bake at 350 degrees for 25-30 or until top springs back. Do not overbake!
10. Cool in pans 10 minutes.
11. Then flip out onto a large plate and put in the freezer. Don’t worry, I know what I am doing. This keeps the cakes from falling apart and won’t leave crumbs in your icing.
12. GANACHE FILLING: Place the chocolate into a medium bowl.
13. Heat the cream in a small saucepan over medium heat. Bring just to a boil. Watch very carefully because if it boils for a few seconds, it will boil out of the pot.
14. When the cream has come to a boil, pour over the chocolate chips.
15. Whisk until smooth.
16. Stir in the Grand Marnier and the orange zest.
17. Transfer hot chocolate to a relatively deep stainless steel bowl and immerse it into a bowl of ice water. Then whip with a hand mixer until it is thick and fluffy.
18. Once it is desired consistency, take out of ice bath or it will continue to harden; set aside.