1/2cupmilk chocolate chipsdefinitely not optional!
Instructions
Preheat oven to 325F and grease an 8in. baking pan.
In a small bowl, combine oil and cocoa until smooth and set aside.
In a large bowl, beat sugar and eggs. Then stir in the vanilla and cocoa mixture.
Combine the flour and salt. Add in chocolate mixture and stir until it just comes together. Stir in the walnuts (optional).
Pour into prepared baking pan and sprinkle with chocolate chips. Bake for 30 minutes or until a toothpick inserted comes out clean. Cool on a wire rack.