Prep your veggies by slicing the celery, dicing the onion, and mincing your garlic.
Get a decent brown on your roast first (because slow-cooked beef often comes out gray-looking). Just pop it in the broiler on a foil-lined baking sheet for 3-4 minutes a side.
Now, I have always been taught that to bring out the best flavor in garlic, you've GOT to saute it, you can't just toss it in. So I saute the onion and garlic together in oil on medium for a couple minutes, until the onions turn translucent. It's an extra pan, but it will jump-start the heavenly smells going in your house and it just takes a couple minutes!
Then, I add the whole mix to the crock pot. Beef roast, stock, veggies, seasoning, onion-and-garlic mix. Cook it on high for 4-5 hours, or on low all day (8 hours or so).
When the beef is tender, it's ready - just slice it up and serve it alongside baked potatoes or rolls.
Recipe by Happy Hour Projects at https://happyhourprojects.com/garlic-and-rosemary-crock-pot-beef-roast/