|Butter||3⁄4 Cup (12 tbs), softened|
|Sugar||3⁄4 Cup (12 tbs)|
|Vanilla extract||1⁄2 Teaspoon|
|All purpose flour||1 3⁄4 Cup (28 tbs)|
|Baking powder||1 1⁄2 Teaspoon|
|Semi sweet chocolate square||1 Ounce, melted (1 Square)|
|Milk||3 Tablespoon, warmed|
In a large mixing bowl, cream the butter and sugar until light and fluffy.
Beat in egg yolk and vanilla.
Combine flour, baking powder and salt; gradually add to creamed mixture and mix well.
Divide the dough in half.
Add melted chocolate to one portion; mix well.
Refrigerate until chilled.
Divide each portion of dough into fourths; shape each into a 5-in.log.
Flatten into triangular-shaped logs.
Brush the long sides with the warmed milk.
Assemble one large roll by alternating two chocolate and two plain logs.
Wrap in plastic wrap.
Refrigerate for 4 hours or until firm.
Unwrap each roll; cut into 1/4-in.slices.
Place 2 in.apart on lightly greased baking sheets.
Bake at 375° for 8-10 minutes or until set.
Remove from the pans to wire racks.