Learn the two-zone truth and own this cut for good
Every T-bone question comes down to one fact: there are two different muscles on that bone, and they don't want the same amount of heat. The steakhouse answer is the butter baste — park the lean fillet at the cooler edge of the pan, spoon the foaming butter over the sirloin side, and let the bone do its quiet insulating work. It takes a thermometer, a heavy pan and a bit of nerve, but master it once and you'll never overcook a fillet side again. This is the skill that makes the grandest steak in the share routine.
Ingredients
- 1 Your Farmer grass-fed beef T-bone steak (about 500g)
- 2 tsp sea salt flakes
- 1 tbsp vegetable or rice bran oil
- 80g butter
- 4 cloves garlic, skin on, lightly crushed
- 4 sprigs fresh thyme
- Cracked black pepper
Instructions
Salt the steak all over and leave it at room temperature for 30 minutes — or, for the deepest crust, salt it the night before and leave it uncovered on a rack in the fridge (optional), then temper 30 minutes before cooking.
1 T-bone steak2 tsp sea salt flakesPat the steak bone-dry. Heat the oil in your heaviest pan over high heat until it just starts to smoke.
1 tbsp oilLay the steak in with the fillet side — the smaller muscle — toward the edge of the pan, where the heat falls away. Sear 2–3 minutes without moving it.
Flip, drop the heat to medium-high, and add the butter, garlic and thyme.
80g butter4 cloves garlic4 sprigs thymeTilt the pan and baste steadily, aiming the spooned butter at the sirloin side and leaving the fillet to coast at the cool edge. Flip every minute now, basting as you go — the frequent turns and the butter cook the steak evenly from both faces.
Check both muscles with a thermometer: pull the steak when the sirloin reads 52–54C and the fillet no more than a few degrees ahead. Stand the fat edge on the pan for a final 30 seconds.
Rest on a warm plate for 10 minutes with the strained pan butter poured over.
Carve both muscles off the bone, slice across the grain, season with pepper and a last pinch of salt, and serve with the resting butter spooned over every slice.
Appears in
Pack B & Pack D shares — T-Bone (~500g)
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Managing Two Muscles on One Bone
Here's the truth that separates a good T-bone from a great one. The big side of the bone is sirloin — the same muscle as a classic sirloin steak — and it wants real heat to build crust and render its fat edge. The small side is fillet, the tender heart of the special-occasion cut, and it's leaner, smaller and quicker to overshoot. Treat them identically and the fillet lands medium-well while the sirloin's still finding its feet. You have three levers, and this recipe uses all of them: position (fillet to the pan's cooler edge), baste direction (the hot butter goes to the sirloin), and the bone itself, which insulates the meat beside it. Success is measurable — a thermometer reading both muscles within a few degrees of each other. Your Farmer® T-bones arrive at about 500g in the Pack B and D boxes of the grass-fed beef CSA share, and grass-fed leanness makes the butter earn its place — it's not garnish, it's the finishing fat the cut asks for.
Swaps and Variations
Ghee handles higher heat than butter without burning, if you want a longer baste. Rosemary or sage swap in for thyme; two anchovies melted into the butter add a steakhouse depth nobody will name. The skill itself is the real takeaway — the same position-baste-bone thinking works on any bone-in steak or thick chop that crosses your bench from here on, which is why it's worth learning properly on the cut that demands it most.
Storage and Leftovers
Thawed raw steak keeps 2–3 days in the coldest part of the fridge; cooked leftovers keep 3 days airtight. Slice leftovers cold across the grain for sandwiches or salads rather than reheating — thin medium-rare slices don't survive a second cooking. The strained baste butter is its own reward: kept in a small jar in the fridge for up to a week, it turns steamed greens, mash or fried eggs into something with a past. And the bone — browned, buttery — belongs in the freezer stock bag, not the bin.
Frequently asked questions
How do I tell the fillet side from the sirloin side?
Why flip every minute once the butter goes in?
My butter went dark and bitter — what happened?
What temperatures should each muscle read?
Do I need cast iron?
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