These brownies are so good you won’t be able to tell they have a secret ingredient. Ask your friends and see if they can guess! Lentils are a great addition because they contain plant-based protein, fibre and minerals.
Preheat oven to 350°F (175°C). Grease a 9x9 inch baking dish with butter, or line with parchment paper.
Puree lentils in a food processor or blender with oil and brown sugar, and egg until smooth.
Empty into a mixing bowl and add salt, flour, and cocoa powder. Mix until just combined.
Save 1 tablespoon each of chocolate chips and walnuts for the top of brownies. Fold the rest of walnuts and chocolate chips into the batter.
Pour batter into prepared baking dish and sprinkle leftover chocolate and walnuts on top.
Bake for 20 to 25 minutes or until just baked through. They will firm up a more while they cool.
Allow to cool completely before cutting into 16 brownies. Store at room temperature.
If using canned lentils drain and rinse before using.