Step 1

To make the mix, whisk together the flour, cocoa, sugar, baking powder, and salt until well combined. Store in a jar or another tightly covered container.

Step 2

Preheat oven to 350°F.

Step 3

Add dry brownie mix to a large bowl. Add the eggs, melted butter, and vanilla. Stir well to combine.

Step 4

Pour into a greased 9x9-inch pan. Bake for 22-25 minutes or until the center is set.

Step 5

Remove and cool before cutting into bars.