Cream butter and sugar. Add sifted flour and cornstarch, 1 Tbsp. at a time.
Beat with electric mixer. When mixed, pat in ungreased 9 x 12 pan. Chill overnight.
Bake in cold oven at 300 for 1-1/2 hours. Near the end of the baking time, watch carefully for burning.
When baked, sprinkle with sugar and cut in squares or wedges while still hot.
Originally Submitted
11/19/2007
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