Can you explain this???

Addison is my picky little eater. I pick up alot of food from off the ground because if she doesn't want it, it goes straight to the ground. She finally will eat something other than yogurt, cheese, granola, and oatmeal. (Okay so she eats other things but this is the main part of her diet) Macaroni and Cheese. The rest of us hate it so I buy the microwave kind. Easy and makes just enough. I love that she will finally eat other things. But what I fine peculiar is the way it looks before I cook compared to what it looks like after it is cooked.

Before:



After:



I love to pull it out of the microwave, it puts a smile on my face every time!!