Heat oil in large skillet over medium-high heat. Season both sides of the short ribs with garlic powder, onion powder, and pepper.
Add ribs to the skillet and sear on each side until browned.
Add the carrots and celery to the bottom of your slow cooker, then place the seared ribs on top.
In a small bowl, whisk together the broth, tomato paste, Worcestershire, and minced garlic. Pour the mixture over the ribs.
Cover and cook on low for 6-8 hours (recommended) or high for 4-5 hours, or until the meat is tender and falling off the bone.
Serve the ribs with the sauce spooned over the top and enjoy.
Notes
I recommend cooking on LOW if at all possible. Cooking low and slow ensures tender, juicy meat.Serve over a bed of mashed potatoes, rice, noodles with sauce spooned over the top.Store leftovers in an airtight container in the refrigerator for up to 3 days. We like to serve these over mashed potatoes, rice, or noodles.