Preheat oven to 350º F. grease pie plate 9x1 1/4". Beat eggs, margarine and
chocolate till smooth, 10 seconds in blender on high or 30 seconds with hand
beater.
Add brown sugar, Bisquick and granulated sugar. Beat till smooth, 1
minute in blender on high (stopping occasionally to scrape down sides) or 2
minutes with hand beater.
Pour into plate; sprinkle with nuts. Bake until
knife inserted in center comes out clean; about 35 minutes. Cool.