Spiced apple carrot cake

Based on http://www.myrecipes.com/recipe/spiced-apple-carrot-cake-with-goat-cheese-frosting-10000001661183/print/
2/3 cups flour
1/2 cups granulated sugar
 3/4 teaspoons baking soda
1/2 teaspoons baking powder
1/2 teaspoons cinnamon
pinch ground cloves
Pinch ground nutmeg
3/4 teaspoons unsweetened cocoa powder
pinch freshly ground black pepper
Pinch salt
1/3 cup vegetable oil
2 large eggs lightly beaten
1/2 cups packed coarsely grated carrots
1/2 cups packed coarsely grated tart apples, such as Granny Smith
1/3 cup coarsely chopped walnuts, plus more for garnish
Frosting:
4 ounces fresh, mild goat cheese, at room temperature
3 ounces cream cheese, at room temperature
2/3 tablespoons unsalted butter, at room temperature
1/4 teaspoon vanilla extract
1/4 cup powdered sugar
1 tsp honey

 350, 25 min