This recipe came from Mr. Food, and was adapted from the Wisconsin State Cranberry Growers Association. These are very good and a little rich. You can use a store-bought bag of cranberries OR fresh cranberries.
In a large bowl, combine 2 cups flour, the confectioners sugar, and butter. Mix with a fork or your hands until mixture starts to hold together.
Press into the bottom of a 15" x 10" x 1" jelly roll pan. Bake for 15 minutes then remove from the oven.
Meanwhile, in another large bowl, combine the eggs, granulated sugar, salt, and remaining 1/2 cup of flour; mix with a wooden spoon until smooth. Fold in the chopped cranberries. Spread mixture over the hot crust, and bake for 32 to 35 minutes.
Remove from the oven; let cool then cut into bars.