Does it make a difference whether you eat a product dried, roasted or melted?
1. cheese vs. melted cheese
A sandwich may look fatter, but melted cheese contains no more calories than regular cheese (assuming the same amount and type of cheese). Read more about cheese vs. melted cheese.
2. fruits vs. dried fruit
In this case, the answer to the question is 'is it just as healthy?' Yes and no. Nothing is usually added to dried fruit, but water is extracted from it. All sugars and fats in the fruit are preserved, but in concentrated form. As a result, dried fruit contains more calories, carbohydrates and sugar per 100 grams than fresh fruit.
3. bread vs. toasted bread
Toasted bread contains nothing but ordinary bread. Toasting removes some water from the bread, but the nutritional value remains the same.