One bowl, one spoon, super easy.
I would like to thank King Arthur Flour for this awesome brownie recipe. I simplified the butter-sugar process a bit and I always halve it, so here's what I do:
1 stick salted butter
1 c. sugar
1/2 c. cocoa (it could be a heaping half-cup)
1/4 tsp. salt (use more if you use unsalted butter)
1/2 tsp. baking powder
1 T. vanilla
3/4 c. flour
6 oz. chocolate chips (1 cup or approximately 1/2 of a 12 oz. bag)
1. Preheat oven to 350 degrees F. Lightly grease an 8x8 baking dish.
2. In a medium-largeish microwave safe mixing bowl, melt the butter in the microwave (30 seconds on high, check; 30 seconds more). Stir in the sugar and return to the microwave for another 30 seconds on high. Stir again and do 30 more seconds on high. This sounds redonkulus but it's important for the nice shiny brownie crust.
3. Mix in the cocoa, salt, baking powder and vanilla. Stir in the eggs until well blended. Stir in flour and chips until the whole thing is well blended and you don't see any more flour specks.
4. Pour into prepared dish (it should level itself out; if not, give it a little shake or two until it's level and spread out). Bake for 30 minutes. A toothpick inserted in the center should come out clean-ish (some clinging crumbs are OK but you don't want it totally wet).
5. About 5 minutes after you take it out, go around the edges with a knife. Apparently this helps it not to fall in the middle. But don't be tempted to cut the brownies up yet... wait until they're totally cool to cut. I cut it into 16 which makes them sort of small... but they're awfully rich so it works.