Place all mushrooms, garlic, and pearl onions in the bottom of your crockpot. If you are still trying to find the best crock pot out there, you can find some coupons for a quality crockpots at Best Buy!
Throw meat and sweet potatoes on top.
Add the rest of your ingredients. I just put all the spices on top of the meat and sweet potatoes. The meat juices will run down onto the musrhooms while the sweet potatoes won't get mushy since they are on top of all the wet ingredients.
Cook at low for 6-8 hours.
Recipe by PaleOMG - Paleo Recipes at http://paleomg.com/paleo-crockpot-beef-and-mushroom-stew/