It is u003cemu003epossibleu003c/emu003e to cook your noodles in the slow cooker but not my first recommendation. If you do go this route, you'll want to remove all the cooked beef first, then let the noodles simmer in the sauce that remains.u003cbr/u003eu003cbr/u003eHowever, the pitfall here is that the noodles will soak up a lot of the liquid, so you may have to add more liquid. Either more beef broth or water. And then, they are prone to overcooking in a hurry and thereby disintegrating.u003cbr/u003eu003cbr/u003eTherefore, a much more tried-and-true and safer method is to cook the noodles in a pot of boiling water on the stove in the last 15 minutes of slow cooking your beef, according to the package directions. Drain and get them ready for all that luscious beef and gravy they're soon to be piled high with!