Preheat your oven to 350°F.
Grate the zucchini and squeeze out excess moisture. Set aside.
In a large bowl, mix oats, gluten-free flour, coconut sugar, baking soda, sea salt, vanilla extract, egg, and melted coconut oil until combined.
Add zucchini, walnuts, and chocolate chips. Mix well.
Line an 8x8 baking dish with parchment paper and press dough evenly into the dish.
Bake for 26-28 minutes until golden and a toothpick comes out clean.
Let cool completely before slicing. Enjoy! Store leftovers in the fridge for up to one week.