In 2-quart saucepan, stir soup; add cheese. Over medium heat, cook until cheese melts, stirring often.
In large bowl, beat together squash, milk, eggs, sage and pepper. Add soup mixture; beat until well mixed.
Pour into prepared pie crust. Bake at 350F for 50 minutes or until set. Let stand 10 minutes before serving. Garnish with sage leaves.
Cajun Country -- New Iberia, Louisiana