Preheat your oven to 350°F (180°C) and prepare a loaf pan by lining it with parchment paper or greasing it thoroughly.

Grate 90 grams of fresh zucchini and squeeze out excess moisture.

In a large mixing bowl, whisk together the egg, mashed banana, maple syrup, vegetable oil, and vanilla extract. Add a pinch of salt and mix until well combined.

Add the drained zucchini to the wet mixture and fold in gently.

Sift together the oat flour, cocoa powder, baking powder, baking soda, and a pinch of salt, then stir into the wet mixture until just combined.

Mix in the choice of milk until the batter is smooth and creamy, then fold in the chocolate chips.

Pour the batter into the prepared loaf pan and bake for 30 to 40 minutes, or until a toothpick comes out clean.

Let it cool in the pan for about 10 minutes, then transfer to a wire rack to cool completely.