After searching both the internet and my home, I finally found my original copy of this recipe, cut from the box of White Baking Pieces. I have included it below. I hope that this helps!

PREMIER WHITE TREASURE BROWNIES

1 1/2 cups all-purpose flour
1/2 tsp. baking soda
1/2 tsp. salt
1 1/2 cups sugar
2/3 cup butter
1/4 cup water
2 tsp. vanilla
1 (12 oz.) pkg. semi-sweet chocolate chips
1 (10 oz.) pkg. large white chocolate baking pieces
4 eggs

Preheat oven to 325 degrees F.

In bowl, combine flour, baking soda and salt; set aside.

In medium saucepan, combine sugar, butter and water; bring just to a boil. Remove from heat. Stir in vanilla extract and Semi-Sweet Chocolate Morsels until mixture is smooth.

Transfer to large bowl. Add eggs, one at a time, beating well after each. Cool 15 minutes. Gradually blend in flour mixture. Stir in large white baking pieces. Spread in greased 13 x 9 inch baking pan.

Bake for 40-45 minutes. Allow to cool before cutting into squares.

Servings: 2 dozen