Cheesy Flounder Florentine

By rockie

4.56 / 5

20min

35min

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1 ½ cups milk
4 (5 ounce) flounder fillets
8 ounces spinach fettuccine
¼ cup butter divided
¼ cup all-purpose flour
1 ½ cups chicken stock
1 teaspoon Dijon mustard
¼ teaspoon ground black pepper
¼ teaspoon ground nutmeg
⅓ cup grated Parmesan cheese divided
⅓ cup shredded Gruyere cheese divided
1 (10 ounce) package frozen chopped spinach thawed and drained