"These bite-size bars are very rich, so small servings are satisfying. They're perfect for parties because they don't require a fork and plate to eat. —Helen Longmire, Austin, Texas..."
INGREDIENTS
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1 cup all-purpose flour
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1/2 cup sugar
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3 tablespoons baking cocoa
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1 teaspoon baking powder
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1/4 teaspoon salt
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1/2 cup cold butter, cubed
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1 large egg yolk
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1 teaspoon vanilla extract
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1/2 cup finely chopped walnuts
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FILLING:
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1 package (8 ounces) cream cheese, softened
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1/3 cup sugar
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1/2 cup sour cream
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1 tablespoon all-purpose flour
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2 teaspoons grated orange zest
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1/4 teaspoon salt
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1 large egg, lightly beaten
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1 large egg white, lightly beaten
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1/2 teaspoon vanilla extract
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Chocolate sprinkles, optional