This is my favorite recipe for brownies. After eating these, you'll never want to buy a boxed mix again!
Melt 1 cup (2 sticks) of butter in a sauce pan.
In a large bowl, combine butter, 2 cups of sugar, and 2/3 cup of cocoa. Mix well.
Add 4 eggs, beating them in one at a time. Then add 2 tsp. of vanilla.
Finally, add one cup of flour and mix until well combined. You can add in 1 cup of chocolate chips if you like.
Pour into a greased 9" x 13" pan.
Bake at 350 degrees for 25-30 minutes.