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1
Mix sour cream and water; heat until warm (105 to 115F).
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2
Stir in yeast; let stand 3 minutes or until yeast is dissolved; set aside.
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3
In large bowl, combine butter and 1/2 cup flour; stir in sour cream mixture.
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4
Stir in egg yolks and enough remaining flour to make soft dough.
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5
Divide dough into 3 equal pieces.
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6
Wrap in airtight plastic wrap; chill at least 2 hours or up to 3 days.
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7
Lightly dust work surface with sugar.
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8
Roll each piece of dough to 12-inch circle; cut into 8 pie-shaped wedges.
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9
Spread each wedge with about 1 tablespoon filling.
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10
Roll up from wide ends to make crescents.
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11
Place, with points down, on greased baking sheets.
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12
Bake at 375F for 20 minutes or until golden brown.
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13
Remove from baking sheets; cool on wire racks.
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14
Makes 24 to 30 cookies.
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15
Filling----------.
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16
In medium bowl, beat egg whites until soft peaks form.
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17
Gradually add sugar and vanilla extract; continue beating until very stiff but not dry.
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18
Stir in ground walnuts and chopped dates or pitted dates (snipped) OR mini chocolate chips.