Preheat oven to 350 degrees Fahrenheit.

Make the crumb topping by mixing the flour, sugar, and margarine or oil by hand until crumbs form. Set aside until ready to top and bake.

Add eggs, sugar, oil, and zucchini to a mixer. Mix for five minutes.

In a separate bowl, mix the flour, baking soda, baking powder, and cinnamon. Then slowly add it to the wet mixture. Once fully combined, pour batter into greased loaf pans, and sprinkle crumbs on top.

Bake for one hour or until a toothpick comes out clean. Freeze in a resealable bag.