Dinner, Kid-Friendly

Lamb Roast with Rosemary Potatoes

Cooking method:

Ninja® Foodi® XL Pressure Cooker Steam Fryer with SmartLid™
  • Prep time: 10 mins
  • Total time: 55 mins
  • Skill easy
  • Serves 4 people

Lamb Roast with Rosemary Potatoes

This recipe is a nod to the many years of family holiday gatherings with a roast. My dad would make many variations on lamb, along with potatoes and another side dish. It was a long, time-consuming effort to do in the oven, and I remember him having to get up early to ensure we would eat on time. With this recipe, you won’t be waiting on the oven in order to get a great holiday meal on the table for your entire family.


Tip: Allergy Advice

This dish contains the following allergens: Wheat



  • 5 cups beef stock
  • 4 garlic cloves, peeled
  • 1 tablespoon whole black peppercorns
  • 3 tablespoons instant flour


  • 3 cups baby potatoes, halved
  • 2 rosemary sprigs, minced
  • 2 tablespoons canola oil, divided
  • Kosher salt
  • Freshly ground black pepper
  • 2 pounds boneless lamb loin

Cooking mode

When entering cooking mode - We will enable your screen to stay ‘always on’ to avoid any unnecessary interruptions while you cook!


  • Step 1

    Start with the Level 1 ingredients: Put the beef stock, garlic, and peppercorns in the pot and stir until combined.

  • Step 2

    Prepare the Level 2 ingredients: In a large bowl, combine the potatoes, rosemary, and 1 tablespoon of oil. Season with salt and pepper and toss until evenly combined.

  • Step 3

    Rub the remaining 1 tablespoon of oil on the lamb and season generously with salt and pepper.

  • Step 4

    Place the bottom layer of the Deluxe Reversible Rack in the lower position, then place the rack in the pot above the gravy mixture. Add three-quarters of the potatoes to the rack, then place the lamb on top of the potatoes. Top the meat with the remaining potatoes.

  • Step 5

    Close the lid and move the slider to STEAMCRISP. Select STEAM & CRISP, set the temperature to 360°F, and set the time for 25 minutes. Press START/STOP to begin cooking (PrE will display for about 15 minutes as the unit steams, then the timer will start counting down).

  • Step 6

    After 25 minutes, check the roast with an instant-read thermometer. For medium-rare it should read 145°F. If you prefer the roast cooked medium to medium well, continue cooking for up to 10 minutes more.

  • Step 7

    When cooking is complete, carefully remove the rack with the potatoes and the roast. Allow the roast to rest for10 minutes.

  • Step 8

    While the roast is resting, use a silicone or wooden spoon to stir in the instant flour until the sauce has thickened. If a thicker sauce is desired, move the slider to the right position, select SEAR/SAUTÉ, and set the temperature to 3. Continue to cook until the sauce reaches your desired thickness.

  • Step 9

    Strain the gravy through a fine-mesh strainer. Slice the roast and serve with the potatoes and gravy.