Yield: Serves 4.
This easy casserole makes an excellent one-dish fish meal -- and the spinach adds nice color.
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- 1 to 2 pounds firm whitefish fillets, such as hake or haddock
- 1 medium onion, chopped fine
- 1/2 cup finely chopped celery
- Salt and pepper to taste
- 1/4 cup olive oil
- 1 package (1 pound) fresh spinach
- 2 medium potatoes, cooked and mashed
- 1 beaten egg
- 1/2 pound grated cheddar cheese