Step 1

Season the prime rib liberally with a dry rub of salt, pepper, thyme, and garlic powder

Step 2

Heat a large skillet or pan over high heat and sear the prime rib until browned

Step 3

Remove the prime rib from the skillet and place in the slow cooker

Step 4

Pour in the beef broth and red wine

Step 5

Cook on low for 6 to 8 hours or until the internal temperature reaches 135 F for medium-rare results

Step 6

Once the prime rib is fully cooked, remove it from the crock pot or slow cooker and let it rest

Step 7

Whisk together cornstarch and water in a small dish, ensuring no lumps

Step 8

Cook the juices from the slow cooker and the cornstarch mixture in a saucepan and bring to a simmer. Ensure you mix continuously until the sauce thickens but is not sticky or too creamy

Step 9

Serve the sliced prime rib and pour the red wine sauce on top for presentation and flavor