Preheat oven to 300 degrees.
Combine butter, crumbs and sugar. Press into bottom of 9 inch springform pan.
In large mixer bowl, beat cream cheese until fluffy. Gradually beat in sweetened condensed milk until smooth. Add melted chocolate. Add beaten eggs. Scrape bottom of bowl and mix again.
Pour into prepared pan. Bake 1 hour and 5 minutes or until set. Cool. Garnish as desired. Refrigerate leftovers.
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