We eat on a budget, too. But I cannot stand processed food for the most part (do love grilled cheese with the american cheese singles, though! And Kraft M-n-C!).
Anyway, we do a ton of soups. Last night was lentil, ham, and veggie soup. I had a hambone left from Christmas (had been in the freezer), and a bag of lentils. Rinsed off the lentils, threw them in the crockpot. Put the frozen ham bone on top. Chopped up whatever veggies I had - celery, onions, carrots. Threw in a bunch of Organic Non-Salt Seasoning (from Costco), Lemon Pepper, Black Pepper, and a few vegetable boullian cubes. Then poured in enough water to cover by about 1.5 inches. Cooked all day.
When I got home, I took out the hambone, added some V-8 because it wasn't soupy enough for me, and a good couple handfuls of frozen corn.
Served with sandwiches. The soup will last us at least 3 dinners, and probably 2 lunches.
Last week was a very similar soup but with a mix of beans vs, lentils.
We do a lot of egg dinners - omelettes, tortilla wrapped eggs, etc.
Most of our meals are meatless. We all love beans and veggies, so it works out. Bean tacos, beans and cornbread, spaghetti and crockpot, homemade marinara sauce. Etc.
Our monthly budget for groceries is $280. We spend the majority of it at Costco...tortillas, fruits, milk (almond and regular) veggies, meat, cheese, fish, snacks, quinoa, black rice, wild rice, and farro, sour cream, eggs, bread, ham steaks, rotisserie chicken, and peanut butter being our regular list. The stuff we get at the grocery store - yogurts, string cheese, beans (b/c Costco doesn't carry all the varieties we like) and deli meat....adds up to very little overall..