I prepare a list of all of the food items I plan to carry on each trip. I mainly track weight, total calories, calories from carbohydrates, calories from protein, and calories from fat, but include whatever information is on the label.  

I add and subtract foods and amounts until I get close to the total caloric goal (~3000 calories per day) and my preferred ratio of 50%:25%:25% (carb, protein, fat). So far my ratios have been closer to 75%:15%:10% and I haven't died or bonked (well, bonked hard once for lack of water) yet. Because of the understatement of fat calories on most food labels, my fat percentage has probably been closer to my goal than I thought. Using 3000 calories a day has always left me with excess food, so I have been trimming that back for recent trips. (I didn't follow my normal planning approach and packed in (and out  :'() about two extra pounds of food on a backpacking trip into the St. Croix State Park last weekend).

On group trips in the BW, we plan meals pretty much the same as regular meals (with little regard for nutritional content)  ;D, then bring what can be dried or is already lightweight. My group usually includes 2-1/2 vegetarians (it's complicated) and we all like spicy Mexican and Cajun food, so we have quite a few meat optional, bean, rice and/or tortilla based dishes.

-aj