Black Walnut Cake

1. 1

   Preheat the oven to 350u00b0F, with a rack in the middle. Butter and flour a 9-inch-square cake pan.

2. 2

   Whisk together the flour, walnuts, baking soda, and salt in a medium bowl.

3. 3

   Beat together the butter and sugar with an electric mixer until pale and fluffy, about 4 minutes. Add the eggs one at a time, beating well after each addition, then beat in the vanilla. Add the flour mixture and the buttermilk alternately in batches, beginning and ending with the flour mixture and mixing until just combined.

4. 4

   Pour the batter into the cake pan and smooth the top. Bake until a wooden toothpick inserted in the center comes out clean, 45 to 55 minutes. Cool in the pan on a rack for 1 hour. Invert the cake over a cake plate and serve.

No additional tips available.