Thick Scotch fillet steak searing in a cast iron pan with garlic, rosemary and bubbling beef fat, forming a deep crust

Thick Cut Scotch Fillet in Cast Iron: Doneness Timing Guide

A thick-cut scotch fillet rewards precision. With proper heat control and accurate timing, you can achieve a deep crust and your exact preferred doneness.

This guide keeps things simple. High heat, proper resting, and a thermometer are the keys to cooking a thick steak evenly from edge to centre.

Recipe Details

  • Serves: 2
  • Preparation: 10 minutes
  • Cooking: 10–14 minutes
  • Difficulty: Easy

Ingredients

  • 1 x 400–450 g thick-cut scotch fillet(4–5 cm thick)
  • 2 tsp sea salt
  • 1 tsp freshly cracked black pepper
  • 1 tbsp beef tallow or high smoke point oil
  • 2 cloves garlic, lightly crushed
  • Optional: fresh thyme or rosemary

Method

Step 1

Remove steak from the fridge 30–45 minutes before cooking. Pat dry thoroughly. Season generously with salt and pepper on all sides.

Step 2

Heat a heavy cast-iron pan over high heat for 3–4 minutes until very hot. Add tallow and allow it to shimmer.

Step 3

Place the steak into the pan. Do not move it. Sear for 3 minutes on the first side to build a deep crust.

Step 4

Flip and cook according to your preferred doneness:

  • Rare: 50–52°C (122–125°F), sear 3–4 minutes per side
  • Medium-Rare: 53–57°C (127–135°F), sear 4–5 minutes per side
  • Medium: 58–60°C (136–140°F), sear 5–6 minutes per side
  • Medium-Well: 61–65°C (142–149°F), sear 6–7 minutes per side
  • Well-Done: 66–70°C (151–158°F), sear 7–8 minutes per side

Step 5

Add garlic and optional herbs during the last 2 minutes. Tilt the pan and baste the steak continuously with hot fat.

Step 6

Rest for 8–10 minutes before slicing. Internal temperature will rise 3–5 degrees while resting.

Step 7

Slice against the grain and serve immediately.

What to Pair With

  • Roasted Baby Potatoes: Crispy edges soak up steak juices.
  • Sautéed Mushrooms: Enhances umami and complements the beefy flavour.
  • Garlic Butter Green Beans: Adds a fresh, crunchy contrast.
  • Red Wine: Full-bodied Cabernet Sauvignon or Shiraz pairs beautifully.
  • Creamy Mash: Smooth texture balances the richness of scotch fillet.

Cook better. Eat exceptional.