I saw this movie at the drive in probably sometime between 1975 and 1983 or so. The only scene I remember is as follows - a group of people are being chased by this monster who looks to be made of slimy clay. They get into the house/cabin/shack and slam the door, but the monsters fingers are caught in the door and they are clopped off. They fall to the floor and splatter. Then they re-assemble themselves and go after the people in the room.
I must add that I am beginning to think I feel asleep and dreamed the movie, so I hope someone can help.
It is not Evil Dead, The Gate, or Equinox.