Preheat the oven to 350°F. Line a 8x8-inch baking pan with parchment paper.
To make the batter: In a large bowl (or using a hand mixer or stand mixer) add the canola oil, cane sugar, cocoa powder, chocolate chips, and sourdough discard.
Pour the boiling water over the top, specifically on top of the chocolate chips. Stir to combine completely until the chocolate chips have combined completely and are totally melted and you have a smooth chocolate mixture.
Add in the flour, vanilla bean, cornstarch, baking powder, and sea salt in that order. Mix to combine.
Transfer the batter to the prepared pan and spread evenly. Add the additional mini chocolate chips for the topping on top.
Bake for 20 to 25 minutes, or until a toothpick inserted in the center comes out clean. Allow to completely in the baking pan.
Cut into 16 bars and store in an airtight container for up to 5 days.
Video
Notes
Tips
Always use a digital food scale for the best results.
This recipe is super flexible, you can use a whisk/spatula to mix it up or a hand mixer or even your stand mixer.
I use an 8-inch square pan, but an 8-inch round pan also works too!
If you don't have sourdough discard, you can mix together 28 grams all purpose flour and 28 grams of water. This will provide the same amount of sourdough discard; you just won’t have the sourdough flavor.
Be sure to store brownies in an airtight container so they stay fresh.
You can also freeze these by wrapping in plastic wrap and storing in a zip bag in the freezer. Just thaw and enjoy!
High Altitude — Bake at 350°F for 18 to 23 minutes, or until a toothpick inserted in the center comes out clean.