Preheat oven to 350°F (175°C) and grease an 8"×8" pan.
Brown butter; let cool slightly. Mix in sugar, eggs, and vanilla until smooth.
Add cocoa powder, flour, salt, and baking powder. Mix just until combined and spread evenly into the pan.
Bake for 25 minutes. Do not over bake. Slightly soft is the goal.
Tags: baking, brownie, chocolate, dessert, make ahead
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