The Ultimate Guide to Roasting a 1.5 kg Pork Roast: Time, Temperature, and Perfection

There is something undeniably comforting about a pork roast coming out of the oven. With its crackling, golden exterior and juicy, tender interior, it’s a centerpiece worthy of both a Sunday family dinner and a cozy autumn weeknight.

If you have a 1.5 kg (roughly 3.3 lb) pork roast sitting in your fridge and you are wondering how long it needs to spend in the oven, you are in the right place. While the exact cooking time depends on your oven and the cut of meat, mastering this crowd-pleaser is easier than you think.

The Golden Rule: Cooking Time for a 1.5 kg Pork Roast

For a standard boneless pork roast cooked at 190°C (375°F), you can generally expect a total cooking time of 1 hour to 1 hour and 15 minutes.

If you are working with a bone-in roast, the bone acts as an insulator, which slightly increases the cooking time closer to 1 hour and 15 minutes to 1 hour and 30 minutes.

Pro Tip: Never rely on the clock alone! The ultimate indicator of doneness is an internal meat thermometer. Pork is safely cooked and at its most tender when it reaches an internal temperature of 63°C to 68°C (145°F to 155°F) in the thickest part of the meat, followed by a proper resting period.

Step-by-Step Guide to Roasting Perfection

To get that restaurant-quality contrast of ultra-juicy meat and crispy skin or crust, follow this simple blueprint:

1. Prep and Temper (30 Minutes Before Cooking)

Take your roast out of the refrigerator about 30 minutes before it goes into the oven. Letting it take the chill off ensures even cooking throughout. Pat the skin or surface completely dry with paper towels—moisture is the enemy of a good crust!

2. Season Generously

Rub the roast with a little olive oil or melted butter, then season liberally. A classic blend works wonders:

• Sea salt and freshly cracked black pepper
• Minced garlic or garlic powder
• Dried herbs like rosemary, thyme, or sage
• A pinch of smoked paprika for color and warmth

3. The Roast

Preheat your oven to 190°C (375°F). Place your 1.5 kg roast on a rack inside a roasting pan so the heat circulates evenly underneath.

• Boneless: Start checking the internal temperature around the 55-minute mark.
• Bone-in: Start checking around the 1 hour and 10-minute mark.

4. The Magic Rest

Once your thermometer hits your target temperature, remove the roast from the oven immediately. Transfer it to a warm cutting board or platter and tent it loosely with aluminum foil. Let it rest undisturbed for 10 to 15 minutes.