Ingredients
Method
- Preheat oven to 350°F (175°C). Grease a 9x5-inch loaf pan and line with parchment. Whisk together flour, cocoa, baking powder, baking soda, salt, and espresso powder if using.
- Beat butter and sugar on medium-high until pale and fluffy, about 3 minutes. Add eggs one at a time, then vanilla.
- With mixer on low, add dry ingredients in three additions, alternating with buttermilk, mixing just until combined.
- Fold in 3/4 cup chopped pistachios. Scrape batter into pan, smooth top, and sprinkle with remaining pistachios. Bake 55 to 60 minutes, until a toothpick comes out with a few moist crumbs.
- Cool in pan 10 minutes, lift out, and cool completely on a rack. Slice and serve.
Notes
If you don’t have buttermilk, stir 1 tablespoon lemon juice into 1 cup milk and let sit 5 minutes. The cake tastes even better the next day, so feel free to bake it ahead.
