
Remove filets from fridge 30 minutes before cooking. Pat completely dry.
Rub with olive oil. Season all sides with coarse salt and pepper.
Air fry at 400°F for 10-14 minutes for medium-rare (130°F internal), flipping halfway.
Mix compound butter ingredients. Place a generous knob on each filet immediately after cooking.
Rest 5-8 minutes. The butter melts into a sauce as the steak rests.
Tip: Filet is lean and tender — it relies on the butter and seasoning for flavor. Don't overcook it; this cut gets tough past medium. The compound butter melting over the resting steak creates a built-in sauce. Pull at 125°F for perfect medium-rare after rest.
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