Bilad al-Sham Kitchen - Chicken with spinach and potatoes

Recipe Ingredients:

- ½ kilogram spinach- 1 cup basil- 2 chicken breasts- 1 onion- 2 garlic cloves- 2 cups mushrooms- 1 kilogram boiled and mashed potatoes- 1 cup milk- 50 grams butter- Salt and pepper- 1 teaspoon smoked paprika- A pinch of nutmeg- Béchamel sauce- Cheddar or mozzarella cheese for topping- 2 tablespoons butter