Ranch Potatoes: simple and delicious. Wash and cut 5-6 red potatoes into 1/2 pieces. Cut 1 small onion into strips. Combine onion, potato a few tables spoons of olive oil and 1 packet of hidden valley ranch into a zip lock bag and shake to combine. Place in a tinfoil packet and grill or bake potatoes or 15-20 minutes until fork tender.