Chocolate Walnut Squares

I havn't tried these yet but they look so good I thought that I would list them. This recipe came from Taste of Home.

• Ready In: 1 hr
• Serves: 20-24
• Yields: 20-24 bars

Ingredients

• 1  cup butter, softened
• 2  cups sugar
• 4  eggs, lightly beaten
• 1  tablespoon vanilla extract
• 2  cups all-purpose flour
• 1⁄2 teaspoon salt
• 2  cups  chopped walnuts
• 2 (1 ounce)  unsweetened chocolate squares, melted

• Frosting

• 5  tablespoons all-purpose flour
• 1  cup milk
• 1  cup butter, softened
• 1  cup confectioners' sugar
• 1  teaspoon vanilla extract

Directions

1. In a mixing bowl, cream butter and sugar. Beat in eggs and vanilla. Add flour and salt; mix well. Fold in walnuts.
2. Spread half of the batter into a greased 13x9 in pan.
3. Add chocolate to the remaining batter; mix well.
4. Carefully spread over the batter in the pan.
5. Bake at 350 for 30-35 minutes. Cool completely.
6. Frosting:Mix flour and milk in saucepan. Cook and stir on medium heat until a thick paste forms, about 10 minutes. Cool Completely.
7. In a mixing bowl cream butter and sugar. Add vanilla and mix well.
8. Gradually add the milk mixture; beat for 5 minutes.
9. Frost cake. Store in the refrigerator.