01 -
Get your oven heated up to 175°C (350°F). Prep an 8-inch round pan by greasing it well, then cover the bottom with parchment. Toss the pistachios into a food processor and grind them until they're super fine.
02 -
In a big bowl, mix up the powdered sugar and ground pistachios. Toss in the eggs, vanilla, a tiny bit of salt, and some baking powder. Stir until it's smooth and everything's mixed through.
03 -
Put the batter in the greased pan. Bake for 25-30 minutes, or until you stick a toothpick in and it comes out clean. Let it sit in the pan for 10 minutes, then pop it onto a wire rack to cool completely.
04 -
Heat the cream over medium in a small saucepan until it's just about to simmer. Take it off, pour in the chocolate chips and butter, and stir until it's all melted and glossy.
05 -
After the cake's cooled all the way, pour the ganache over the top so it drips down the sides. Let it set up a bit before cutting into it.