Bake and Slice Chocolate Swirls

Bahan-bahan (72 porsi)

• 1 cup semi sweet chocolate chips
• 1/2 cup sweetened condensed milk
• 1 tablespoon shortening
• 3/4 cup (1½ sticks) butter, (at room temperature)
• 3/4 cup packed brown sugar
• 1 teaspoon vanilla extract
• 1/2 teaspoon salt
• 2 cups all purpose flour, ((measure, then sift))
• milk
• 3/4 cup chopped walnuts or almonds ((optional))
• powdered sugar, (to dust on top)