From the kitchen of Deb Arthur
Melt butter in large bowl in microwave. Whisk in cocoa and oil until smooth. Stir in sugar. Add eggs one at a time, beating well after each addition. Stir in vanilla. Combine flour, baking powder and salt. Add to cocoa mixture. Stir in chocolate chips and pecans. Spread into a greased 13 x 9 x 2" pan. Bake at 350°F for 30 min. Line bottom of pan with waxed paper and grease pan and paper if you want to remove from pan after baking. Let set approx. 3 min. after removing from oven the invert on wax paper covered cooling rack. Then invert one more time onto wax paper covered rack so they are right side up. I like to use European Style Cocoa (Dutch Processed) in this recipe. It has a richer flavor.