Chocolate Filled Walnut-Oatmeal Bars

this is a great bar that will fill almost any need. Christmas cookie trays, showers, pot-luck's and family munching.

• Ready In: 50 mins
• Serves: 48
• Yields: 4 dozen

Ingredients

• 1  cup butter or 1  cup margarine, softened
• 2  cups  packed light brown sugar
• 2  eggs
• 1  teaspoon vanilla extract
• 1⁄2 teaspoon powdered instant coffee
• 3  cups  quick-cooking rolled oats
• 2 1⁄2 cups all-purpose flour
• 1  teaspoon baking soda
• 1⁄2 teaspoon salt
• 1 1⁄2 cups  chopped walnuts, divided

• CHOCOLATE FILLING

• 1⁄2 cup butter or 1⁄2 cup margarine
• 2⁄3 cup  hershey's cocoa powder
• 1⁄4 cup sugar
• 1 (14 ounce) can sweetened condensed milk (not evaporated milk)
• 1 1⁄2 teaspoons vanilla extract

Directions

1. Heat oven to 350°F Beat butter and brown sugar in large bowl until well blended.
2. Add eggs, vanilla and instant coffee and beat until fluffy.
3. Stir together oats, flour, baking soda, salt and 1 cup walnuts; gradually stir into butter mixture with spoon (Dough will be thick).
4. Set aside 2 cups dough.
5. Press remaining dough evenly onto bottom of ungreased 15-1/2x10-1/2x1-inch jelly-roll pan.
6. Prepare CHOCOLATE FILLING; spread evenly over dough.
7. Crumble reserved dough evenly over filling. Sprinkle with remaining 1/2 cup walnuts. Bake 25 minutes or until top is golden brown (chocolate will be soft).
8. Cool completely in pan on wire rack; cut into bars.
9. About 4 dozen bars.
10. CHOCOLATE FILLING: Melt butter in medium saucepan over low heat. Stir in cocoa and sugar. Add sweetened condensed milk; cook, stirring constantly, until smooth and thick. Remove from heat. Stir in vanilla.