Chocolate Marble Squares

I signed up for PAC Spring 2009, and I realized that I didn't have very many dessert recipes. I searched for this one on RZ, and didn't find it, so here it is. I haven't made it in a long time, but I used to make it as a kid all the time. It's from Nestle 1965.

• Ready In: 31 mins
• Serves: 24
• Yields: 24 bars

Ingredients

• 1  cup chocolate chips
• 2  teaspoons  cooking oil
• 1⁄2 cup shortening, softened
• 6  tablespoons sugar
• 6  tablespoons brown sugar, packed
• 1⁄2 teaspoon vanilla
• 1⁄4 teaspoon water
• 1  egg
• 1  cup flour, and additional
• 2  tablespoons flour
• 1⁄2 teaspoon salt
• 1⁄2 teaspoon baking soda
• 1⁄2 cup  nuts, coarsely chopped

Directions

1. Over double boiler, combine chocolate bits and cooking oil. Stir until chocolate melts and mixture is blended; set aside.
2. Combine shortening, sugars, vanilla and water and beat until creamy.
3. Add egg and blend.
4. Sift together the flour, salt and baking powder. Add to shortening/sugar mixture until blended.
5. Stir in nuts.
6. Spread mixture in a greased 13x9x2" pan. Spoon the melted chocolate over the top; run a knife through the batter to marbleize.
7. Bake in a 375 degree oven for 14 to 16 minutes.
8. Cool; cut into 2" squares.