Almond Roca Bars

1 cup butter or margarine
1/2 cup packed brown sugar
1/2 cup granulated sugar
2 cups flour
1 teaspoon vanilla extract
1/3 pound dark chocolate (Guittard's)
1/2 cup finely chopped nuts

Mix all ingredients. Press mixture into 11 x 15-inch cookie sheet. Bake at 350 degrees F for 12-15 minutes.

Melt chocolate on HIGH for 1-2 minutes and spread over baked dough. Sprinkle with nuts. Cut into bars while still warm.