1/4 cup pureed avocado (about 1/2 avocado)
1/4 cup olive oil
1 cup whole-wheat flour
1/2 cup cocoa powder
1/2 cup granulated sugar
1/4 cup packed brown sugar
1 teaspoon baking soda
1/2 teaspoon salt
3/4 cup water
2 teaspoons vinegar (or lemon juice)
3 ounces semisweet or dark chocolate, roughly chopped
1. Preheat oven to 350 degrees and grease an 8-by-8-inch pan.
2. In a large mixing bowl, stir together avocado and olive oil until smooth. Add flour, cocoa powder, granulated sugar, brown sugar, baking soda, salt, water, and vinegar and mix until smooth. Fold in chocolate chunks.
3. Pour into prepared pan, spreading batter evenly throughout pan. Bake for 15 to 20 minutes or until a toothpick inserted into the center comes out moist with a few crumbs but does not come out with runny batter. (Do not over-bake or brownies will have a cake-like texture.)