Preheat the oven to 350.
Mix together the wet ingredients: eggs, melted butter, and vanilla into a large bowl.
Fold in 1 cup of grated zucchini and 1 cup of drained crushed pineapple or the grated zucchini infused with pineapple*. There is no need to drain the zucchini shreds of excess moisture.
Add the dry ingredients of brown sugar, cinnamon, all purpose flour, salt, baking soda and baking powder into a separate bowl. Whisk to incorporate the baking soda, baking powder and salt evenly throughout the flour mixture.
Mix the wet ingredients and dry ingredients together until just combined. Add pecans if desired.
Grease two loaf pans and pour the batter into the prepared pans making sure to evenly divide the batter between the two pans.
Top with brown sugar cinnamon topping or extra pecans if desired.
Place the loaves in a preheated oven and bake for 60 minutes or until done. To test for doneness, insert a knife into the middle of the loaf, the bread is done when the knife comes out clean.
Let the bread cool for 10-15 minutes before cutting into individual slices to serve.
Serve warm with butter.