healthy foods

What are good healthy foods you can eat to gain weight?
I am looking to gain 5 pounds or so, and I do not want to eat healthy. What are some healthy foods I can eat to help me with weight gain? I prefer the sugar, which are weak.
Mashed potatoes with butter, olives in the salad or pizza are good fats. Macaroni and cheese, lasagna with lots of cheese.
Healthy Food = Beautiful Skin