Juicy Steak and Crispy Garlic Butter Potatoes Step-by-step instructions

Before you start

Before beginning, ensure that your oven is fully preheated to the required temperature. Have your baking sheet prepared with high-quality aluminum foil, which not only facilitates easy cleanup but also helps reflect heat back onto the food for even browning.

Chop all vegetables into uniform sizes to ensure they cook at the same rate. Finally, ensure your steak is sliced into consistent pieces, which will allow for even cooking throughout the tray.

Instructions

Preparation and Initial Roast

1. 1Prepare the Ingredients
   Preheat the oven to 400°F (200°C). Line a large baking sheet with aluminum foil. Arrange the cubed potatoes and chopped onions on the baking sheet.
   Look for Potatoes and onions should be spread in a single layer.
   Tip Ensure the potatoes are cut into uniform sizes to promote even roasting.

At the end of this phase, the potatoes and onions should be starting to soften in the oven. The kitchen should begin to smell like roasted vegetables and aromatics. Check that the potatoes are spread in a single layer to ensure they have enough room to crisp up properly during the subsequent roasting stages.

Adding Steak and Garlic Butter

2. 2Roast and Sear
   Roast the potatoes and onions for 20 minutes. Remove from the oven, add the sliced steak to the tray, and drizzle everything with the garlic butter mixture. Return to the oven to finish cooking until the steak reaches an internal temperature of 145°F (63°C). Let the meat rest for at least 3 minutes.
   Look for Steak should be browned and potatoes golden and fork-tender.
   Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
   Tip Do not overcrowd the pan so the steak sears properly instead of steaming.

Once the steak is added and the garlic butter is drizzled over the tray, the aroma becomes significantly more intense and savory. The steak should be sizzling as it hits the hot tray.

Check that the butter is distributed evenly across all ingredients, as this fat is essential for crisping the potatoes and keeping the meat succulent throughout the final cooking duration.

Resting for Perfection

3. 3Serve
   Transfer the steak and potatoes to a serving plate once the resting period is complete. Serve immediately while warm.
   Look for Meat juices should settle and the steak should look juicy.
   Tip Cover loosely with foil while resting to maintain warmth.

After removing the tray from the oven, the steak should appear browned and juicy, while the potatoes should be crispy and golden. The resting phase is the final check; the meat should be allowed to sit undisturbed for at least 3 minutes. This allows the internal temperatures to stabilize and ensures that the juices are fully absorbed back into the fibers of the steak.

Common mistakes

A common mistake is overcrowding the baking sheet, which causes the ingredients to steam rather than roast. Ensure there is plenty of space between the steak pieces and the potatoes.

Another frequent error is failing to dry the steak properly; moisture on the surface creates steam, which prevents that desirable brown crust. Lastly, do not skip the resting period, as this is vital for retaining the juices within the meat.

How to tell it’s done

To check for doneness, use an instant-read meat thermometer inserted into the thickest part of the steak. It should register 145°F (63°C) for medium-rare to medium, which is the ideal range for sirloin.

The potatoes are done when they are golden brown on the edges and offer no resistance when pierced with a fork. The onions should be soft, translucent, and slightly caramelized, adding a sweet contrast to the savory steak.

• Steaks, chops and roasts: 145°F (63°C) in the thickest part, then a 3-minute rest