Yes, the foods that have been mentioned are healthy, high calorie foods. Another thing you can do is to get a good protein powder to add to foods, or enjoy as a light meal in between other meals.
This page may give you some more ideas as well, although I would advise you to stay away from the Ramen noodles -recent research shows that they are quite unhealthy.
www.shape.com/healthy-eating/diet-tips/most-deceiving-foods-they-have-more-calories-you-think