Texas Two-Step Chicken Picante

1 1/2 cups picante sauce
3 tablespoons packed light brown sugar
1 tablespoon Dijon-style mustard
4 skinless, boneless chicken breast halves
3 cups hot cooked rice

Mix picante sauce, sugar and mustard. Place chicken breasts in a 2-quart shallow baking dish. Pour mixture over chicken. Bake at 400 degrees F for 20 minutes or until chicken is done. Serve over rice.