There's loads! Scrambled eggs, smoothies, omelette, cereal (use full fat yoghurt and milk), cheesey mash potatoe (with plenty of butter and cheese: loadsa calories in that). Full fat yoghurt with any of his favourite food. Even something like avocado, tomatoe, basil and full fat Philedelphia (Oscar's fave snack), or toast spread with full-fat laughing cow cheese.
High calorie food doesn't have to be unhealthy restrictive foods like cheese and full-fat stuff. Avacado, mangoes, bananas, grapes are all high in calories too, and much better for him! Even vegetables stir-fried in butter or oil will be high in calories too!
