First - gather all of your ingredients.
If you want to use only one bowl, use a big one.
First, melt your butter and chocolate together.
You can use the microwave, yet do so at 1/2 the power. Or, use a double boiler. You can put your bowl on top of the pot (unless it might melt).
Once The first two ingredients are melted together, add in the next 3. Mix well.
Then, add in the flours. Mix really well.
Line a 9x13 pan with parchment paper. Pour in the brownie mixture.
Bake at 350 degrees for 32 minutes.
After the brownie is completely cool (I let mine sit in the fridge for 2 hours) take out and carefully remove the parchment paper. As you can see, I didn't do this carefully enough, thus my brownie cracked (I was actually being dumb and trying to flip it over...silly me). Not to worry, it still will taste just as great. Cut and eat.