INGREDIENTS
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1 1/3 cups chocolate wafer crumbs
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1/4 cup softened butter
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1 tablespoon sugar
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1 1/2 cups semi-sweet chocolate chips
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1/4 cup coffee-flavored liqueur
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2 tablespoons butter
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2 eggs, beaten
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1/3 cup sugar
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1/4 teaspoon salt
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1 cup sour cream
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2 (8 ounce) cream cheese, softened