If you're up for more of a challenge, Garten describes her chocolate ganache cake as more of an intermediate-level dessert. But it only calls for nine ingredients (ten, if you're feeling posh and want to include edible gold flakes, which Ina deems optional).
"You can make the chocolate cake a couple of days in advance, cool it, wrap it well in plastic wrap and refrigerate," Garten says. "Chocolate ganache is just chocolate and heavy cream heated together over a double boiler."
I've been making Garten's ganache since 2016, and while using a double boiler—aka putting a heat-proof bowl atop a saucepan with a little water in it, letting the steam gradually melt the chocolate—may seem intimidating, it's pretty easy to get the hang of. And the results are worth it. The gradual melting keeps the chocolate from seizing and turning gritty, so it's luscious, glossy and easy to pour.
"Be careful that you take it off the heat as soon as the chocolate is melted, or it will taste burnt," Garten advises. "You can make the ganache right after dinner and simply pour it on. It’s actually easier to ganache a cold cake; just don’t refrigerate it after the cake is ganached."
However, if you want more of a frosting-like consistency, you can also let the ganache cool a bit and whip it with a stand mixer to thicken it up. It's equally delicious, becoming lighter in color and more mousse-like in texture.