Set slow cooker on low. Unwrap the chuck roast and poke holes on all sides with a knife or fork. Massage meat with olive oil and red wine vinegar.
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Step 1
Season all sides with salt, pepper, basil, parsley, and garlic powder. Before adding the roast, sprinkle half the onion on the slow cooker bottom. Add remaining onion and garlic.
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Step 2
Simmer simmer 8-10 hours until beef shreds readily with a fork. Continue cooking for 1-2 hours if it's hard to tear after 8 hours.
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Step 3
Place the crock pot roast on a chopping board. Separate beef with two forks. Now serve meat and juices over noodles or mashed potatoes. It goes with sandwiches, burritos, and tacos!