Step 1

Set oven to 350°

Step 2

In a microwave safe bowl add butter & sugar heat for 1 min till butter is melted. Set aside to cool

Step 3

In a separate larger bowl add in eggs and yolk and vanilla mix in butter sugar mixture.

Step 4

Mix in cacao, oil, flour, baking soda, corn starch, salt (batter will be thick)

Step 5

Spread evenly on baking sheet and bake for 30-35 min till toothpick inserted in the center comes out clean

Step 6

Cool and store in a air tight container or zip lock last for 3 days