Brownies - dense and deep chocolate

1/2 cup melted butter
4 ounces melted unsweetened chocolate
1 cup sugar
2 eggs
1 teaspoon vanilla extract
1 cup Pamela's Baking & Pancake Mix
1/2 cup nuts (optional)
1/2 cup chocolate chips (optional)

Preheat oven to 350°. Melt chocolate and mix with melted butter. Add eggs, vanilla and sugar, and beat. Add Pamela's Baking & Pancake Mix and combine. Add optional nuts and/or chocolate chips. Bake in a lightly greased 8-inch square pan for 20 to 25 minutes, done when a toothpick inserted comes out with crumbs. Do not overbake!