In a large mixing bowl, COMBINE the brownie mix, water, oil and egg; STIR in chips.
SPREAD into a greased 13 x 9 x 2-in baking pan.
BAKE at 350° until a toothpick inserted near the center comes out clean, about 25 to 27 minutes.
COOL on a wire rack.
Frost with butter cream frosting or top with ice cream.
Per Serving (excluding unknown items): 1361 Calories; 110g Fat (67.3% calories from fat); 13g Protein; 107g Carbohydrate; 10g Dietary Fiber; 212mg Cholesterol; 91mg Sodium. Exchanges: 1 Lean Meat; 21 1/2 Fat; 7 Other Carbohydrates.