This slow cooker beef and mushrooms is so easy, it only took me about 5 minutes to throw together! You can serve it over mashed potatoes if you like. Also, you could definitely add more meat to this. I'm just watching portion size but another pound of meat could be added without changing the amounts of the other ingredients.
1lb stewing beef cubes
1/2 bag baby carrots (1/2lb)
8oz button mushrooms, quartered
1 can low fat condensed mushroom soup
1 packet dry onion soup mix
1 can diet root beer (or regular root beer, or cola)
Add the beef, carrots and mushrooms to the slow cooker. Mix together the other ingredients and pour into the slow cooker.
Cook on high for 4 hours or until the meat is tender.
Adapted from Laaloosh.