1. Heat a grill pan (or barbecue) over a high heat until hot.
2. Meanwhile, combine the garlic, chilli, oregano, paprika, salt and pepper in a shallow bowl.
3. Brush the steaks with the butter; press steaks into the spice mix. Brush the grill or barbecue with a little oil. Cook steaks for about 4 minutes each side or until blackened and done as desired. The time will depend on the thickness of the steak. Turn the steaks once so they get distinct char lines. Remove steaks from pan; cover loosely with foil to keep warm. Stand for 3 minutes.
4. Drizzle steaks with juices that have collected while standing. Serve with sweet potato mash and steamed greens or salad, if desired.
Not suitable to freeze or microwave.