If you don’t have any of them, just leave them out, and you will still have a super flavorful huevos rancheros casserole. Refried beans make a delicious foundation. Store-bought refried beans and salsa will work too, but homemade is obviously preferred. Three “Real Food” Staples That Aren’t What You Think. Layer half the tortillas in the bottom of the prepared pan, overlapping them to cover the bottom of the pan.