• Preheat oven to 350 degrees and grease a 15x10x1 inch pan. In a medium mixing bowl, add 2 cups all-purpose flour, 1 teaspoon baking powder, 1/2 teaspoon salt, and 1 ½ teaspoons ground cinnamon. Set aside.
• In a mixer, add 1 ½ cups granulated sugar, 1 cup vegetable oil, and 3 large eggs and mix until smooth. Add the dry ingredients to the wet ingredients until incorporated.
• Stir in 2 cups shredded zucchini and chopped 1 ½ cups pecans. Spread evenly in the prepared pan. Bake for 30-40 minutes or until a toothpick inserted in the center comes clean. Let bars cool completely.

To make the Brown Butter Frosting

• Heat a medium-sized saucepan to medium heat. Add 6 tablespoons butter and whisk until it turns brown. Add in 6 cups powdered sugar, 1 teaspoon vanilla, and 8 to 10 tablespoons milk. Stir until smooth. Spread over cooled bars.