Adapted from Nestles
1 2/3 cups sugar
3/4 cup (1 1/2 sticks) butter, melted
2 tablespoons water
2 teaspoons vanilla
1 1/3 cups flour
3/4 cup cocoa powder
1/2 teaspoon baking powder
1/4 teaspoon salt
2 cups semi-sweet chocolate chips
Preheat oven to 350º. Grease 9 x13 pan (or line with non-stick foil). Set aside.
Combine sugar, butter, water in large bowl. Add eggs and vanilla and mix till combined. Stir in flour, cocoa, baking powder and salt. Stir in chocolate chips. Spread into prepared pan.
Bake18-22 minutes or till toothpick inserted in center comes out a bit sticky, but not covered with batter.