Sear the venison roast is a hot cast iron skillet. You want to make sure the skillet is very hot with a little grease in it. (I like to use coconut oil but olive oil will work). You want an instant searing reaction when the meat touches the skillet. The juices will lock into the meat and result in a better finished roast.
Season meat on each side as you rotate it
While meat is searing, add gravy ingredients into the crockpot and whisk together
Transfer the roast into the crockpot, gently to avoid splashing
Add any vegetables
Squeeze ketchup on top or tomato paste, pressed or minced garlic and a little more seasoning
Set the crockpot to low heat and cook for 8-10 hours.