Preheat the oven to 350°F and line an 8 x 8-inch baking pan with parchment paper.
Combine the mashed avocado, almond milk, and maple syrup in a large bowl.
In a separate bowl, combine the whole wheat flour, cocoa powder, baking soda, and sea salt.
Mix the flour mixture into the avocado mixture until a smooth batter is formed.
Fold in the chocolate chips. Pour the batter evenly into the prepared pan.
Bake for 40 minutes, or until a fork poked into the center comes out clean.
Remove from the oven and let the brownies sit for 15 minutes before cutting.