There are precious few things I enjoy more than a lunch break in a place like this. Sarek NP, Lapland, Sweden.
Muesli mixed with dried milk makes a good start in the morning. Just add water and mix.
Freeze-dried food, especially this kind where you just pour hot water into the package and let it sit for 5-10 minutes, is very handy. Also expensive, with very varied taste (ranging from disgusting to decent) and with lots of packaging.
Mashed potato powder is a cornerstone in my diet. Mix it with dried cheese and garlic powder or some pieces of hard, dried sausage and you have a meal that might equal the freeze-dried ones. Even if the spoon breaks when you dig into it.
Noodles at night, a wanderer's delight... Well, it is carbohydrates.
Trail snacks do and should make up quite a big part of your daily intake of calories. Some people snack all day and only cook morning and night. Some do not cook at all. To each his own.
When I repackage for instance powdered potatoes or muesli, I find a machine like this very handy. You simply pull the twisted plastic bag through the slot and a piece of tape seals it.
Comments and current insights: Once you've started using mainly dried food-stuffs it is difficult to save much more weight, unless you plan on a serious calory deficit during your hike. Even if many of us in the Western world could and should lose a few pounds, I do not recommend to combine hiking with weight loss. You might lose a bit of your spare tire anyway, but it is important that you have a steady consumption of calories during the day in order to be able to enjoy the land around you, and in order to make sound decisions. More on this in the book.