1 box (7.5 oz.) Suddenly Pasta Salad™ Ranch and Bacon
2 tablespoons butter
2 sliced yellow onions
1 teaspoon powdered beef bouillon or ½ tablespoon beef bouillon paste
1/4 cup sour cream
1/4 cup mayonnaise
1 tablespoon apple cider vinegar or water
2 tablespoons chopped fresh parsley