First of all heat the oven up to the 200 degrees. Place sweet potato and potato in the baking dish lined with the non sticking paper.
Sprinkle with the oil and Drizzle with pepper & salt. Bake it for the 45 minutes or up to the golden & tender.
Mix together the sweet potato and potatoes with parsley, lemon thyme, the dressing & onion until proper combination.
If you see that mixture is a little bit dry, you could add some extra mayonnaise and sour cream.
Now the red potato salad is ready to serve you can serve it up to the 8 to 10 people. I anticipate that you will enjoy this recipe for potato salad. It one of the best recipe for the salad and can be made in very little time.