I agree the fat is good for children. Children, especially tots shouldn't be on a "adult healthy diet" The need the fat for growth and brain development, its one of the main reasons parents are told to use butter, whole milk, and other higher fat foods. They also tend to burn off more then your average adult.
Eating healthy for a child is a lot different then eating healthy for an adult
If your worried about salt, just add less when you cook, and by all means add veggies if you like. DD loves her's with chunks of broccoli in it. She loves meat sauce too but is no longer allowed to eat them cause of a tomato allergy
I'm hoping she grows out of it like I did