Step 1

Combine all the ingredients in a large bowl and whisk to remove any lumps. Store in an airtight container.

Step 2

Preheat the oven to 350 degrees Fahrenheit.

Step 3

Grease a 9" square pan or line with parchment paper.

Step 4

Place the brownie mix in a bowl.

Step 5

Add the melted butter, beaten eggs, and vanilla extract to the dry ingredients and stir to combine.

Step 6

Spread the batter into the prepared pan.

Step 7

Bake in the preheated oven for 20-23 minutes or until the center is set and an inserted cake tester comes out clean.

Step 8

Cool in pan on a wire rack.