Layer 1 . Crush Oreos in blender until fine. Melt butter and stir into Oreos. Press in pan. Freeze appx 15 min
Layer 2. Spread softened vanilla ice cream over frozen Oreo layer. Freeze appx 15 min.
Layer 3. Spread chocolate fudge over frozen ice cream. ( If in a glass jar remove lid and microwave 20 sec. to thin out fudge to spread evenly.) Freeze appx. 15 min.
Layer 4. Spread softened Cool whip over frozen fudge layer. Freeze appx 15 min.Sprinkle cashews or peanuts over top . Cover and freeze overnight .