Chocolate Filled Walnut-Oatmeal Bars

== Description ==
Makes about 4 dozen bars.
==Ingredients==
* 1 cup (2 sticks) butter or margarine, softened
* 2 cups packed light brown sugar
* 2 eggs
* 1 tsp vanilla extract
* ½ tsp powdered instant coffee (optional)
* 3 cups quick-cooking rolled oats
* 2½ cups all-purpose flour
* 1 tsp baking soda
* ½ tsp salt
* 1½ cups chopped walnuts, divided
=== Chocolate filling ===
* ½ cup (1 stick) butter or margarine
* ⅔ cup Hershey's cocoa
* ¼ cup sugar
* 1 can (14 oz) sweetened condensed milk (not evaporated milk)
* 1½ tsp vanilla extract
==Directions==
# Heat oven to 350°F.
# Beat butter and brown sugar in large bowl until well blended.
# Add eggs, vanilla and instant coffee, if desired; beat until fluffy.
# Stir together oats, flour, baking soda, salt and 1 cup walnuts; gradually stir into butter mixture with spoon.
# Set aside 2 cups dough.
# Press remaining dough evenly onto bottom of ungreased 15½x10½x1-inch jelly roll pan.
# Prepare chocolate filling; spread evenly over dough.
# Crumble reserved dough evenly over filling.
# Sprinkle with remaining ½ cup walnuts.
# Bake 25 minutes or until top is golden brown (chocolate will be soft).
# Cool completely in pan on wire rack; cut into bars.
=== 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.
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Category:Bar and square Recipes