Apply the saute function to your slow cooker and place olive oil in the base. Season pork chops with garlic powder, salt and pepper. Saute 4-5 minutes each side until brown. If you do not have a crockpot with this function, sear meat in a pan over medium-heat.
Whisk together the beefy onion mix, golden mushroom soup, broth and dry gravy mix. Pour over the pork chops, doing your best to completely cover.
Cover and cook on low for 6 hours.
About 30 minutes before pork chops are done cooking, whisk together the cornstarch and cold water until smooth. Pour into the crockpot, cover and cook on high for 30 minutes. This will thicken the liquids and make a nice gravy.
Serve over mashed potatoes, cauliflower, rice or noodles. Store leftovers in an airtight container in the refrigerator.