Anonymous wrote:I feel like there are so many variables.
One is what your definition of healthy is. Some people it's about less processed, or about the sodium, or about the carbs, or the fat, or having vegetables . . .
The other is your definition of a casserole. What is it you seek that makes it casseroley? Cheese? Goopiness? A whole meal in one?
I have things to suggest, but it really depends on your own definitions.
I agree with this answer — happy to provide recipes, but I need more info on OP’s definition of a casserole and what she wants out of a healthy meal.