Preheat the oven to 350°F.
Grease a loaf pan and line with parchment paper.
In a large bowl, whisk together one and one-half cups of Bisquick, one teaspoon of baking soda, and one-quarter teaspoon of cinnamon.
In a separate large bowl, blend one-quarter cup of sugar, two beaten eggs, one-half cup of vegetable oil, and one teaspoon of vanilla.
Combine the dry ingredients with the wet ingredients until incorporated, being careful not to over mix.
Fold in the grated zucchini and chopped pecans. Place the grated zucchini in a cloth or paper towel and wring it to get out the excess moisture before adding it to the batter.
Pour the batter into the prepared loaf pan. Bake for about 45 minutes, or until the bread pulls away from the sides of the pan.
Remove the bread from the oven and let it cool on a wire rack for 10 minutes.
To prepare the frosting, place one block of cream cheese, one quarter of a cup of unsalted butter, one tablespoon of cinnamon and one cup of icing sugar in a mixing bowl. Mix using an electric hand mixer until it reaches a smooth consistency. Spread over the zucchini nut bread and store in the refrigerator.