Reese's® Chocolate Peanut Butter Bars

Reese's® Chocolate Peanut Butter Bars
 PEANUT BUTTER LAYER:
¾ cup butter or margarine, softened
¾ cup peanut butter
2 cups packed brown sugar, light or dark
2 eggs
1 teaspoon vanilla extract
2½ cups quick-cooking oats
2½ cups UNBLEACHED all-purpose flour (bleached flour toughens baked goods)
1 teaspoon baking soda (I used 1 heaping teaspoon baking soda)
½ teaspoon salt
½ cup (1 stick butter)
CHOCOLATE LAYER:
⅔ cup unsweetened cocoa
⅓ cup white sugar
1 can (14 ounces) sweetened condensed milk
1½ teaspoons vanilla
1½ cups (10-ounce package)
Reese’s Mini Pieces
Instructions
PEANUT BUTTER LAYER:
Preheat oven to 350°.  Beat ¾ cup softened butter, peanut butter, brown sugar, eggs, vanilla, salt and baking soda until well blended.  Stir in flour and oats.  Do not beat or mixture will become tough.  Batter will resemble cookie dough.  Set 2 cups of the batter aside.  Press remaining dough evenly into a greased 13×9 inch baking pan.
CHOCOLATE LAYER:
Melt ½ cup butter in a saucepan over low heat.  Stir in cocoa and white sugar.  Add 1 can sweetened condensed milk; stirring constantly over low heat until smooth and thick.  This will take about 5 minutes.  Remove from heat and stir in 1½ teaspoons of vanilla.  Spread chocolate mixture evenly over peanut butter/oatmeal dough in the pan.  Sprinkle about ¼ cup of the Reese’s candies over the chocolate.  Crumble the reserved two cups of dough over the candies.
Sprinkle the remaining Reese’s candies over top of the dough.  Bake 25 minutes or until top is lightly brown.  Cool completely on a wire rack.  Cut into bars.