1. Pre-heat oven to 350°F.
2. Grease and flour a 8x8-inch baking pan.
3. In a large bowl, beat margarine and sugar until fluffy.
4. Add egg and vanilla; beat well.
5. Add dry ingredients and stir, just until moistened.
6. Stir in zucchini and nuts.
7. Pour into pan and bake 25 minutes.
8. Cool in pan.
9. Cut into 9 bars.