From the tennesseeanytime.org web site, the November-December 2004 recipe:

Bars:

2 cups all-purpose flour
1/2 teaspoon baking soda
1/2 cup light brown sugar
1/2 cup butter, softened
3/4 cup sorghum
1 large egg
2 teaspoons pure vanilla extract
1 cup pecans, chopped

Frosting:

1/2 cup butter, softened
2 ounces cream cheese
1 tablespoon light brown sugar
3 tablespoons sorghum
1/4 cup + 2 tablespoons confectioners' sugar
Toasted pecan halves for garnish

Preheat oven to 325 degrees. Grease an 8x8-inch baking pan and set aside.
In a medium bowl, combine flour and soda. In a large bowl, blend sugar and
butter to form a grainy paste. Add syrup, egg and vanilla. Beat at medium
speed until smooth. Add flour mixture and pecans. Blend at low speed just
until combined. Pour batter into a baking pan and smooth top with spatula.
Bake 40 minutes or until a toothpick inserted in the center comes out clean.
Cool in pan for 15 minutes, then invert onto cooling rack Cool completely
before frosting.

Meanwhile, in a medium bowl, cream butter and cream cheese. Add brown sugar
and sorghum, beating until smooth. Reduce mixer speed and slowly add
confectioners' sugar, mixing until smooth. Spread frosting on cooled bars,
cut and garnish each with a toasted pecan half. Yield: 12-16 bars.