Thaw frozen spinach and squeeze excess moisture from it. Set aside. Place cream cheese and stick of butter in sauce pan on low/medium heat. Mixture should be soft. Add spinach and stir to combine. Add salt & pepper to taste. Either spray with Pam or use butter to coat a casserole dish. Add mixture and level out. Top with bread crumbs and sage. Place pats of butter on top. Bake at 350 degrees for 30 minutes in a deep 1 to 1.5 quart casserole dish. Enjoy!