We bought a big size crockpot this year to accommodate extra guests and to possibly have a little bit to save to have for the next day’s lunch or to freeze. (Unlikely)
Depending on the size of your family and your crock pot, purchase a big pot roast.
Seer the piece of meat in a hot skillet just enough to seal in the juices and brown both sides.
Slice about 3 or 4 big carrots, an onion (or use dried minced onion for speed cooking), a few chopped potatoes (unless you want to stick with strict paleo and then you would leave these out or use sweet potatoes).
Put the chopped vegetables in the bottom of the crock pot.
Place the roast on top of the veggies
Sprinkle with a package of Lipton Onion Soup mix
Pour a can of beef broth over all.
You can put this on early in the morning and let it cook all day.