Oh, let's see.... today we had leftovers. When I made spaghetti the other day I did a two lb box of regular and one lb of gluten-free (in separate pots, of course). One lb of ground meat, one large-ish jar of ragu sauce. Two meals for 7. The other leftovers were mushroom chicken & rice. two cups of brown rice cooked up. Three pint jars of de-boned chicken thighs that didn't seal in the canner, one quart of mushroom soup thickened with cornstarch.
For sides, I add to my salads and cooked greens by browsing in the yard, or bringing home 'weeds' from the farm--purslane, lamb's quarters, wood sorrel, dandelion at times. The veges we get from the farm we try to use all of--- beets get cooked as beets, the tops go in the greens, the stem parts go to the bunnies.
some nights, PB&J is about all I can muster, but one jar of PB covers several meals for us. A loaf or two of homemade GF bread, and some homemade jam/jelly, often with wild gathered or discarded fruits. Protein from the PB, some carrot sticks or something on the side for veggies, bread for the carbs..
I don't use powdered milk, myself. I worry a great deal about the hormones that were probably used in the production thereof, and the affect they could have on my beautiful little girl. We stick with raw milk, which, at 3.50/gallon, is my biggest grocery splurge most of the time.
Pudding for dessert, or jello. We've been using up old pudding mixes, the newest of which expired in 2010, but once those are done, I'll make from scratch.
Breakfasts... usually cold cereal because i'm not a morning person, but I've been known to do pancakes, which are cheap to make, with homemade blueberry or cinnamon apple or vanilla peach syrups all homemade.