Sometimes you don't have to go far to find a great recipe - this one came from the inside of the baking chocolate box.
Baker's One Bowl Brownies
From the inside of Baker's Unsweetened Baking Chocolate Squares (with very few changes)
4 oz unsweetened chocolate
3/4 cup butter
2 cups sugar
1 tsp. vanilla
1 cup flour
1 cup pecans or walnuts
Step 1. Microwave butter and chocolate for 2 minutes, then mix until the chocolate has melted completely. Stir in sugar.
Step 2. Blend in eggs and vanilla. Mix in flour and nuts. Spread into a 9x9 baking sheet that is lined with foil and greased.
Check out how thick the batter gets after you add the eggs!
Step 3. Bake for 30-35 minutes at 350 degrees F.
Let them cool, then cut them into squares.