Cinnamon Toffee Bars

Dough:

1 cup unsalted butter, softened
1 cup packed brown sugar
1 large egg
1 teaspoon vanilla
2 tablespoons cinnamon
1/2 teaspoon salt
2 cups all-purpose flour
1 egg white, beaten

Streusel:

6 tablespoons cold butter
1/4 cup all-purpose flour
1/4 cup sugar

Heat oven to 375 degrees.  Grease a 15x10 inch jelly roll pan. Cream butter, brown sugar, egg and vanilla in a mixing bowl. Stir in cinnamon and salt.  Add flour, a little at a time.  Blend well.  Press into pan to a 1/4-inch thickness. Use wax paper to press dough into pan.

Brush beaten egg white over dough.  Combine streusel ingredients in a food processor.  Process until butter is evenly blended.  Sprinkle struesel over dough. Bake for 20 minutes. Cool on white rack for 15 minutes.  Cut into diamond shape while it is still warm.