1 1/2 cups Carrots, shredded
2 1/2 cups All-Purpose Flour
1 tsp Baking Powder
1 tsp Baking Soda
1 tsp Ground Cinnamon
1/4 tsp Ground Nutmeg
1/4 tsp Ground Cloves
1/2 tsp Salt
1 1/3 cups Sugar
1/3 cup Dark Brown Sugar
3 Eggs
3/4 cup Plain Yogurt
3/4 cup Vegetable Oil
3/4 cup Walnuts, chopped
8 oz pkg Cream Cheese, softened
1/2 stick Unsalted Butter, softened
1 tsp Vanilla Extract
2 cups Powdered Sugar
3/4 cup Walnuts, chopped, for garnish (optional)