Preheat oven to 350F (175?C).
Sift together plain flour, cinnamon, baking soda, salt and baking powder.
Beat eggs well.
Gradually add sugar and oil, beat together well.
Add vanilla and dry ingredients from above blend well.
Stir in the zucchini.
Combine walnuts and 1 tsp of flour, stir this into the batter.
Pour batter between two 2 greased (I use baking paper) 8 1/2" x 4 1/2" x 2 1/2" loaf tins.
Bake for 1 hour or till tests done (skewer poked in the middle comes out clean).
Cool in tins on racks for 10 minutes before removing from tins, cool on racks.
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