This taco casserole is a hit at the dinner table, not on the budget! Loaded with protein-packed mushrooms and high fiber hearty-healthy beans, it really helps to stretch your meat even further. This recipe can easily serve 8 on just 1 pound of ground beef! I prefer buying my produce at Aldi because they are the cheapest. Beans, corn, canned tomatoes and chips/taco shells are both pretty easy coupon pantry staples, as well. I can easily do this for dinner with a budget of $10, including the meat. This filling casserole easily serves 8. That’s just $1.25 per person!