Remove the bread pan from the bread machine. Add the eggs and butter to the bread pan.
Mix the flour, sugar, baking soda, baking powder, cinnamon, and salt in a mixing bowl. Pour this dry mixture over the wet ingredients in the bread pan.
Insert the bread pan into the machine. Turn the machine on and select the QUICK BREAD or CAKE cycle. Choose a light or medium crust setting if applicable.
Start your bread machine. Carefully fold in the zucchini and walnuts after the first mixing cycle. Use the ADD-INS alarm if your model has one.
Secure the lid and leave the machine to complete the cycle.
Once done, remove the bread pan from the machine and place on a cooling rack. Wait 10 minutes before tipping it out. Allow the bread to cool completely before slicing.
