Butterscotch Nut Fudge

Butterscotch Nut Fudge
1/4 cup butter
1 cup brown sugar
1 cup sugar
3/4 cup sour cream
1 teaspoon vanilla extract
1/2 cup chopped pecans
Pecan halves
Melt butter in a heavy saucepan. Add the brown sugar and heat to
boiling. Add the sugar and sour cream, and cook over medium heat until
sugar dissolves. Raise heat slightly, and cook until mixture reaches
236°F on a candy thermometer.
Remove from heat, and do not stir. Allow to cool at room temperature to
lukewarm (pan bottom barely warm to the touch).
Beat until mixture holds its shape and loses its gloss. Quickly add the
vanilla and nuts. Working fast, spread the candy in a buttered 8-inch
square dish. Press a pecan half into each piece. Cool and cut into
squares. Makes 4 to 5 dozen pieces.