Preheat oven to 350 degrees and depending on whether you're making muffins, loaf bread or both, grease and flour the loaf pan(s) and/ or line the muffin pan with muffin liners.In a bowl, beat the eggs until frothyAdd and beat in sugar, oil and vanilla until the mixture is thick and lemon-coloredStir in the zucchiniSift cinnamon, baking soda, salt and baking powder into the flour (I just mix in a bowl with a pastry cutter)Add flour and other sifted ingredients into the mixFold in the chopped nutsPour into 2 greased and floured loaf pans (8"x4" works well), OR 18-24 lined muffin tins (number of muffins depends on how big you want them -- Fill ¾ of the cup or ½ the cup depending on how big you want the muffins) , OR 1 loaf pan and 12 muffin tins.FOR BREAD: Bake in a preheated 350 degree oven for one hour (Insert tooth pick and it should come out clean)FOR MUFFINS: Bake in a preheated 350 degree oven for 30 mins (insert tooth pick and it should come out clean)Cool for ten minutesIf bread, Invert onto rack