Preheat oven to 350°F (175°C). Grease and flour a 9x13 inch baking pan.
In a medium bowl, mix together the flour, baking powder, baking soda, and salt. Set aside.
In a large bowl, cream together the butter and sugars until light and fluffy. Beat in the eggs, one at a time, then stir in the vanilla extract. Beat in the applesauce and zucchini.
Gradually blend the dry ingredients into the creamed mixture. Fold in the chocolate chips and walnuts. Spread evenly into the prepared pan.
Bake for 40 to 45 minutes in the preheated oven, or until a toothpick inserted into the center of the cake comes out clean.
Allow to cool before serving.
Interesting Facts
This cake is a fun way to get some vegetables into a dessert while still being sweet and delicious.
Chocolate chips and walnuts make this cake even more irresistible.
This cake is great for any occasion, from a birthday party to a picnic or family get-together.