Cheesy Fish Fillets with Spinach

2 Tbsp butter or margarine
2 Tbsp all-purpose flour
1 tsp instant chicken bouillon granules
Dash ground nutmeg
Dash cayenne pepper
Dash whitepepper
1cup milk
2/3 cup shredded Swiss or cheddar cheese
1 package (10 oz) frozen chopped spinach, thawed and well drained
1 Tbsp lemon juice
1 lb fish fillets, cut into serving-size pieces
1/2 tsp salt
2 Tbsp grated Parmesan cheese
Paprika

Melt butter in a saucepan over low heat.  Stir int he flour, bouillon, nutmeg, cayenne and white pepper; cook over low heat, stirring constantly, until mixture is smooth and bubbly.  Stir in milk; bring to a boil and cook, stirring constantly, for 1 minutes  Add cheese; cook and stir just until it melts.  Remove from the heat and set aside.

Place spinach in an ungreased 9x13 or 8x8 baking dish.  Sprinkle with lemon juice.  Arrange fish over spinach; sprinkle with salt.  Spread sauce on top.  Bake, uncovered, at 350 degrees until fish flakes easily with a fork, about 20 minutes.  Sprinkle with Parmesan cheese and paprika; return to the oven for 5 minutes.