Preheat oven to 325°F. Spray two 8” round cake pans with cooking spray; dust bottom and sides with flour.
In a bowl, mix together flour, baking powder, baking soda, cinnamon, and salt.
In another bowl using an electric mixer, beat Splenda Sugar Blend, oil, and eggs on medium speed until smooth.
Add flour mixture, beating on low speed until blended. Fold in carrots, pineapple, coconut, and walnuts.
Pour batter into prepared pans.
Bake for 35–40 minutes, or until a wooden pick inserted in center comes out clean. Cool in pans on a wire rack 10 minutes. Remove from pans, and let cool completely.
Spread Cream Cheese Frosting between layers and on top and sides of cake, if desired.