Add onion to skillet and saute until translucent, about 3 minutes.
Heat skillet or grill pan over medium heat. Drizzle lightly with olive oil. Remove steaks from the ziptop bag and place into the skillet or on the grill pan. Sear on each side for about 3-5 minutes per side. Set aside and allow to rest as the soup is cooking.
Mix together dry ingredients through black pepper and rub onto ribeye steaks. Place steaks into a ziptop bag and place in the refrigerator to marinate at least one hour to overnight, preferred, but can be done right before cooking.