1) In a large bowl, add spinach, mayonnaise, cheeses, salt, garlic, lemon juice and mix them up.
2) Add 2 tablespoons of milk blend it in and add artichokes. Mix it well.
3) Take a casserole dish and pour the mixture.
4) Sprinkle some more cheese.
5) Bake the casserole for 25 minutes at 400 degrees.
6) Serve the spinach casserole with chips or crispy bread cubes.