Slimmed Down Carrot Cake

Name: Slimmed Down Carrot Cake
Ingredients: Nonstick cooking spray, for greasing; 1 1/2 cups granulated or coconut sugar; 1/4 cup canola oil; 2 teaspoons vanilla extract; 2 large eggs; 2 cups all-purpose flour; 2 teaspoons baking soda; 2 teaspoons ground cinnamon; 1/2 teaspoon salt; 1 cup carrot puree or carrot baby food; 1 cup frozen grated coconut, thawed; 2/3 cup walnuts, finely chopped; 1/2 cup crushed pineapple, drained; One 8-ounce package Neufchatel cheese, at room temperature; 2 cups confectioners' sugar; 1 teaspoon vanilla extract; 3/4 cup walnuts, finely chopped