line an 8x8 inch pan with parchment and lightly grease
measure ingredients and bring eggs to room temperature.
Make Batter And Bake
melt butter and let cool slightly
whisk in sugar and cocoa until glossy
whisk in eggs and vanilla until smooth
fold in flour salt and baking powder just until combined
fold in chocolate chips optional
spread batter evenly in pan and sprinkle sprinkles over the top
bake until edges are set and a toothpick in the center comes out with a few moist crumbs 28 to 32 minutes
cool completely in pan then lift out and slice.
Notes
1. Use parchment for clean slices; For extra fudgy brownies underbake by 1 to 2 minutes; Swap sprinkles for mini chocolate candies or seasonal sprinkles; Store airtight at room temperature up to 3 days or freeze up to 2 months