This recipe isn't really healthy despite the addition of grated zucchini but I did decrease the amount of oil found in the original (1 1/2 c) and I do think that apple sauce or another sub could make it even better. These cupcakes were so wonderful because they were rich and almost creamy so be careful when baking and go for under done rather than over!
Chocolate Zucchini Cupcakes (12 cupcakes and 2 mini-cakes)
2 cups all-purpose flour
2 cups white sugar
3/4 cup unsweetened cocoa powder
2 teaspoons baking soda
1 teaspoon baking powder
1/2 teaspoon salt
1 teaspoon ground cinnamon
4 eggs
1 cup vegetable oil
3 cups grated zucchini
1) mix together the flour, sugar, cocoa, baking soda, baking powder, salt and cinnamon.
2) blend in the eggs and oil, mix well
3) stir in zucchini
4) distribute into lined cupcake tins and place in over
5) bake for 30 min a 350 or till toothpick comes out clean.
taken from: http://allrecipes.com/Recipe/Chocolate-Zucchini-Cake-III/Detail.aspx