Preheat the oven to 350°F (175°C).

In a mixing bowl, mash the ripe avocados with a fork until smooth.

Add the honey (or maple syrup), milk, and vanilla extract to the mashed avocado and mix well.

In a separate bowl, combine the whole wheat flour, baking powder, baking soda, and salt.

Gradually add the dry ingredients to the wet ingredients, stirring until just combined.

Pour the batter into a greased loaf pan.

Bake in the preheated oven for 30-35 minutes, or until a toothpick inserted into the center comes out clean.

Allow the bread to cool in the pan for 10 minutes before transferring to a wire rack to cool completely.