First, preheat the oven to 325° F. Grease and line a 1 lb baking loaf with parchment paper. Grease a small ramekin as well. See notes below for muffins*
Next, grate the zucchini. It will be about 2 medium zucchinis grated. Do not squeeze any moisture out like some recipes do. We want all the liquid! Measure out 2 ½ cups worth of lightly packed zucchini and set aside.
In a large bowl, whisk together the oil, eggs, sugar, and vanilla extract until homogenous.
Then, add the flour, baking powder, baking soda, cinnamon, and salt. Stir to combine with a spatula. The batter will be very thick, almost like cookie dough. At this point, I eat about 4 spoonfuls of the batter because it's just that good.
Finally, add the zucchini into the thick batter and stir until the zucchini is completely folded into the batter.
Pour the batter into the 1 pound loaf baking dish. You want it to be full, but an inch shy of full to the rim. You will have about 1 cup of batter left. I normally just use a ramekin for the remaining batter and bake that at the same time as the loaf. It will come out before the bread and is a perfect sample of the bread to come.
Bake the loaf for about 60 minutes*. My ramekin takes about 25 minutes. I normally have to add time to the loaf, but it depends on what loaf pan I used and the temperature of my kitchen. Once a toothpick comes out clean, you are good to go. Take it out of the oven and let it cool for at least 30 minutes before slicing. Enjoy!