Cook pasta according to package instruction. Set aside.
Preheat the oven to 400° Fahrenheit.
To Make The Casserole
In large bowl combine cream cheese, half & half, lemon juice, chicken bouillon, garlic, and nutmeg. Use an electric hand mixer and beat until creamy. Fold in spinach, salmon, and cooked pasta. Season with salt and pepper.
Transfer the mixture into the casserole dish. Top the casserole with shredded cheese and bake for 30-35 minutes at 400° Fahrenheit.