This fudgy cake is truly a home run! With pistachios in the batter and on top, it is delicious and an impressive twist to a standard chocolate cake.
Make cake: Preheat oven to 170 degrees.
Lightly grease Round Silicone Cake Pan
In a large mixing bowl melt butter and 230g chocolate in microwave in 30 second blasts, stirring frequently.
Whisk in sugar and vanilla, then eggs, buttermilk, and ¾ cup of pistachios.
Add flour, salt and baking powder and mix until just combined then pour batter into Round Pan.
Bake until a toothpick inserted in center comes out with a few moist crumbs attached, 55-60 minutes.
Let cool completely in pan, about 3 hours. (To store, wrap in plastic, and keep at room temperature, up to 3 days).
Make ganache: In a small saucepan, bring cream to a simmer; remove from heat.
Add 120g chocolate, and let stand 5 minutes; whisk until smooth, then let cool
Set cake on a serving platter; Pour ganache onto center of cake; spread evenly over the top and down the sides. Let set, about 30 minutes.
Sprinkle top with left over pistachios.