This is very easy to make and has the option to frost the cake, but I found the cake so moist that it didn't need frosting. You can not taste the zucchini, so kids will get their veggies and not even know it!
Chocolate Zucchini Cake
1pkg pudding included devils food cake mix
2C shredded, zucchini
1/2C chopped nuts, optional
1/2C semi-sweet chocolate chips
Heat oven to 350. Grease and flour a 13x9(I used a bundt pan). In a large bowl, blend cake mix, cinnamon, zucchni, buttermilk, oil and eggs at low speed. Beat 2 minutes at high speed. Pour into pan; sprinkle with nuts and chocolate chips. Bake for 35-45minutes, or a bundt pan for 50minutes+, or until a toothpick comes out clean. Serve plain or frost.