Mix 1 can refried beans with 1 C bisquick, 1 4oz can green chiles and 1/4 c of salsa, and put into greased 8x8 pan. Spread mixture in dish. Top with 3/4 c salsa and 4oz shredded cheddar, and bake at 375 uncovered for 30 mins. After you remove from oven, let stand for at least 5 mins before cutting. Top with lettuce, tomato, sour cream, scallions, etc. I serve with Spanish rice.
It's delicious, healthy (if you buy the right beans -- you can get fat free, low sodium, etc, these days; Amy's brand makes some good ones), vegetarian (again, if you buy the right beans), extremely easy (can put it together in under 10 mins and just put in fridge til ready to bake), kid-friendly, and costs almost nothing.