Spinach Mushroom Creamy Soup

This soup is mm mm good and a long over due request from Becky to post on here. It's been a large group/showers/book group staple for my mom for as long as I can remember but I like to make it just for me (since my husband wont eat mushrooms) too.

(Serves 4-6)
5 tbsp butter
1/4 lb fresh mushrooms sliced
1 scallion
5 tbsp flour
2 c chicken broth
2 c milk
1/2 tsp salt
1/2 tsp pepper
1/2 tsp nutmeg
1/4 lb cream cheese softened
1 c fresh grated swiss cheese
3/4 lb fresh baby spinach trimmed, cooked in microwave and drained of water

(for large groups triple milk and spinach. quadruple everything else)

Melt butter in large sauce pan. Slowly saute mushroom and scallion till tender. Add flour stir till just cooked- a few minutes. Whisk in first chicken broth and then milk, stirring until thickened. Add spices, cream cheese, swiss cheese. When mixed in then add precooked and drained spinach. Heat through while gently stirring. Serve hot.