Preheat your oven to 165°C (330°F).
Grate the zucchini and squeeze out all excess moisture using a clean cloth or cheesecloth.
Beat the egg with erythritol until the mixture turns pale and fluffy.
Stir in the coconut oil, yogurt, lime zest, and vanilla.
Combine the whole wheat flour, almond flour, baking powder, and salt in a separate bowl.
Fold the dry ingredients into the wet mixture until fully incorporated.
Add the sliced peach and gently mix.
Grease a 16x8x7 cm loaf pan and pour in the batter.
Bake for about 50 minutes, or until a toothpick inserted into the center comes out clean.
Let the cake rest in the pan for 30 minutes to help it set and keep its shape.
While the loaf is still warm, spread it with a quick glaze made from cream cheese, lime zest, and sweetener.
Decorate the cake with with thinly sliced peach.