1/2 cup white sugar
3/4 cup packed light brown sugar
1/2 teaspoon vanilla extract
1/2 teaspoon baking soda
1/4 teaspoon salt
1/4 cup butter, melted
In a small bowl, beat the white sugar until fluffy. Stir in the brown sugar and light brown sugar. Combine the baking soda and salt, mix lightly. Add the melted butter and beat until well blended. Transfer this mix to the prepared pan.
Layer the white sugar mixture, brown sugar and melted butter over the beef filling in a large pan. Pour the melted butter onto the beginning, then cake the rest of the way around. Cover the bottom of the pan tightly with foil. Let cool completely before cutting into bars.