Dinner · Part 1 of 3: Ingredients
Garlic Herb Pork Loin Roast with Potatoes and Onions

- Prep
- Cook
- Total
- Serves
- 6
Savor the mouthwatering aroma of a succulent, golden-brown garlic herb pork loin roast as it bakes to perfection in your oven. This simple, one-pan dinner pairs tender pork with sizzling baby potatoes and sweet onions, all glistening in rich, savory pan drippings. It is the ultimate comforting meal that requires minimal effort but delivers spectacular, crowd-pleasing results for any night of the week.
Creating a spectacular centerpiece dinner does not have to involve hours of complicated prep work or a sink full of dirty dishes. This garlic herb pork loin roast is a magnificent one-pan wonder that combines a juicy, herb-crusted protein with a built-in side dish of tender baby potatoes and caramelized sweet onions.
By roasting everything together, the vegetables absorb the rich, savory drippings from the pork, elevating their natural sweetness and creating an incredibly cohesive flavor profile. It is a foolproof method that guarantees a moist, flavorful roast and perfectly cooked vegetables every single time.
Ingredients
- 3 lb pork loin roast
- 3 tbsp olive oil, divided
- 4 cloves garlic, minced
- 2 tbsp chopped herbs
- 1 1/2 lb baby potatoes, halved
- 2 sweet onions, cut into thick wedges
Why this recipe works
The secret to this recipe lies in the high-heat roasting method combined with a robust wet rub of olive oil, fresh garlic, and aromatic herbs. Rubbing the pork loin with this mixture creates a protective barrier that seals in the natural juices while forming a beautiful, flavorful crust on the exterior.
As the pork roasts, the heat renders the fat cap slowly, basting the meat from the outside in and keeping it incredibly tender and succulent throughout the cooking process.
Roasting the baby potatoes and sweet onions in the same pan is a culinary masterstroke that maximizes efficiency and flavor. The vegetables act as a natural roasting rack for the pork, keeping it slightly elevated so hot air can circulate evenly.
As the pork cooks, its seasoned drippings baste the potatoes and onions below, infusing them with rich, savory depth while the high oven temperature caramelizes their natural sugars to perfection.
Notes and substitutions
When selecting your ingredients, look for a high-quality pork loin roast with a nice, even fat cap on top, which is essential for keeping the meat moist during roasting. For the herbs, fresh chopped herbs provide the most vibrant, earthy notes that pair beautifully with pork.
If baby potatoes are unavailable, standard Yukon Gold potatoes cut into uniform one-inch chunks make an excellent substitute, as they hold their shape well and develop crispy edges.
A heavy-duty roasting pan or a sturdy rimmed baking sheet lined with foil works best for this recipe, ensuring even heat distribution and easy cleanup. Ensure the sweet onions are cut into thick wedges so they caramelize beautifully without burning during the roasting process. Avoid using a glass baking dish, as it can trap too much moisture and prevent the pork and vegetables from achieving that desirable roasted, golden-brown exterior.
- baby potatoes: Yukon Gold potatoes cut into one-inch chunks
- sweet onions: yellow onions or red onions cut into thick wedges
Equipment
- heavy-duty roasting pan
- aluminum foil
- cutting board
- carving knife
- small bowl
- meat thermometer
- spoon
Up next · Part 2 of 3
5 steps · 1 h of cooking · what to look for at each stage
Step-by-step instructions (Part 2)