Cut all of the potatoes and onions into large chunks. Using large chunks (about 2 inches square) makes sure they don’t turn to mush in the crock pot.
Add the Roast to the crock pot, then the potatoes and onions and carrots (if used).
Add the seasonings over top.
Add the beef stock. The roast should be covered in liquid so add water until it is covered.
Depending on your crock pot and how fast it cooks will depend on the time. Mine is pretty hot so it took about 5 hours on high. (You will know it is done when you put a fork in it and it just falls apart.)
Once it is done remove the roast, potatoes, onions, and carrots from the crock pot and enjoy.
You can use the juice over your roast or you can make a gravy by putting it on the stove and bringing to a boil while whisking in flour to the desired texture.
Recipe by Comeback Fitness at https://laurareadel.com/2015/11/crockpot-roast-beef/