Ultra Rich Brownies

With Oil:
1 bag of Pamela's Chocolate Brownie Mix
1/2 cup oil
1/4 cup water
1 large egg
1/2 cup sour cream

With Butter:
1 bag of Pamela's Chocolate Brownie Mix
1/2 cup butter, melted
1/3 cup water
1 large egg
1/2 cup sour cream

Optional:
1/2 cup nuts (walnuts, macadamia or pecans)
1/2 cup additional chocolate chips

Put all ingredients into a bowl. With spoon, mix only enough to incorporate. 1 tablespoon additional water can be added if batter appears too thick. For the fudgiest brownies, do not over mix. Over mixing will yield cake-like brownies. Pour into a greased 8" square pan. Bake at 350° for 18 to 20 minutes with oil method, or 22-24 minutes with butter method. Do not overbake. A toothpick inserted into brownies should come out with slight crumbs.