If using 20 oz. steak strips, follow same instructions as 10 oz. steak strips, working in batches if necessary and cooking until steak strips reach minimum internal temperature.
If using flank steak, follow same instructions as steak strips, cooking until flank steak reaches minimum internal temperature.
If using ribeye, pat dry and season both sides with a pinch of salt and pepper. Follow same instructions as steaks strips in Step 4, cooking until browned and ribeye reaches minimum internal temperature, 4-6 minutes per side. Transfer to a plate. Rest at least 5 minutes and halve to serve. Cook mushrooms with garlic salt in same pan, no need to wipe clean.
If using Impossible burger, follow same instructions as steak strips in Step 4, breaking into smaller pieces and cooking until heated through, 3-5 minutes.