Grandma Olga's Kolacky
Ingredients:
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1 teaspoon white sugar
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¼ cup warm water (100 degrees F/40 degrees C)
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2 (.25 ounce) packages active dry yeast
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4 cups sifted all-purpose flour
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1 cup margarine, softened
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4 egg yolks
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1 cup sour cream
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3 (10 ounce) jars apricot or other fruit filling (such as Baker® Fine Dessert Filling)
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½ cup confectioners' sugar, for dusting