Put the roast in the crock pot insert
Sprinkle dried onion soup mix evenly over the top. Use 2 if the roast is larger
Cook on the low setting for about 6 - 8 hours or 4 hours on high
Time will vary according to the weight
Remove to a cutting board
Let it rest before slicing
Gravy
Pour the pan drippings into a sauce pan and bring to a low boil
Mix together well 2 tbls of cornstarch with 4 tbls of water
Add a few tablespoons of the hot pan drippings
Mix well then slowly pour into the sauce pan while stirring the liquid
Bring to a gentle boil then lower to a slow simmer
Stir occasionally
Cook until desired thickness