I’ve taken this to potluck suppers and everyone just loves it and asks for the recipe.
Preheat oven to 375 degrees. Mix all ingredents in a casserole dish, except ¼ cup cheddar cheese, try to blend in the oysters as well as possible (they could even be chopped up before adding). Sprinkle remaining ¼ cup shredded cheese on top before baking. Bake for 30 to 45 minutes.