Preheat oven to 350°F and grease a 9-inch round cake pan.
In a medium bowl, whisk together the all-purpose flour, buckwheat flour, baking powder, baking soda, cinnamon, nutmeg, cloves, and salt.
In a large bowl, beat the butter and sugar until light and fluffy. Add the eggs, one at a time, beating until well incorporated. Add the vanilla and mix until combined.
Add the dry ingredients to the wet ingredients and mix until just combined. Add the buttermilk and mix until just combined. Fold in the walnuts.
Pour the batter into the prepared cake pan and bake for 35-40 minutes, or until a toothpick inserted into the center comes out clean.
Allow the cake to cool in the pan for 10 minutes, then turn it out onto a wire rack to cool completely.
Interesting Facts
Buckwheat flour is gluten-free, making this cake suitable for those with gluten intolerance.
This cake is full of warm spices, giving it a comforting flavor perfect for any occasion.
Buckwheat flour has a nutty flavor, giving this cake a unique twist.