Millionaire's Shortbread

Yield: 30 servings. Preheat the oven to 350 degrees. In a large bowl, cream the butter and sugar together. Add the flour and cornstarch to the mixture and knead for a few minutes by hand. Spread the batter in the prepared pan and press down firmly with a spatula or the palm of your hand. Bake for 1 hour, or until the shortbread is a golden brown. Let the shortbread cool in the pan on a wire rack while you make the filling. In a medium saucepan, heat the butter, brown sugar and sweetened condensed milk over low heat until the butter is melted and the mixture is bubbling. Simmer for 5 minutes, stirring constantly, until the mixture turns golden brown in color. Remove from the heat and let cool slightly. Spread the filling over the cooled shortbread. Melt the chocolate bars in a microwave on high for 20 seconds. Stir, and heat for additional 10-second increments until fully melted. Spread the melted chocolate over the cooled filling. Let the assembled shortbread cool in the pan for 20 minutes. Cut into 2-inch bars and serve during a tax audit or any other special occasion. Variation: Add 1 cup semisweet mini morsels to the batter before baking.