Oatmeal fudge bars use an oatmeal cookie as both a base and topping, with a layer of smooth, chocolatey fudge and crunchy toasted walnuts baked in the middle.
In a large mixing bowl, cream 1 cup of the butter and light brown sugar until light. Add in eggs and 1 teaspoon of vanilla extract.
Sift or whisk the all-purpose flour, baking soda, and salt. Add to the creamed mixture and mix until combined, then stir in the quick-cooking oats.
Press two-thirds of this mixture into the bottom of an ungreased jelly roll pan (15"x10"x1" pan).
In a small saucepan, combining the chocolate chips with the remaining butter and sweetened condensed milk and stir until melted. Once melted, add in remaining vanilla extract.
Pour the fudge mixture over the oatmeal cookie base layer and sprinkled with toasted walnuts. Sprinkle the remaining oatmeal cookie dough on top of the fudge layer.
Bake at 350°F for 20-25 minutes, or until the top is lightly golden brown. Cool completely before cutting.
Notes
To toast the walnuts: spread chopped walnuts on an ungreased sheet pan and bake at 350°F degrees for 6-8 minutes. Cool and store if not using right away.
Toasted nuts will keep sealed in an airtight container for about two weeks or frozen up to one month
You can substitute milk chocolate chips for the semi-sweet chocolate chips
Store bars in an airtight container at room temperature for up to 3 days
Bars will keep in freezer; keep sealed for up to 45 days