Pour quarter cup skim milk into a blender container; sprinkle gelatin over milk; allow to soften for 5 minutes. Heat two third cup skim milk to boiling point. Pour into blender bowl and blend until gelatin dissolves. Add egg yolks, 4 tb sugar, cocoa and vanilla. Blend at medium speed until well mixed. Add cottage cheese and blend until smooth. Refrigerate until thick. Beat egg whites; add remaining sugar and fold into chocolate mixture. Mix crumbs and cinnamon. Place in an 20 cm pie pan. Carefully pour in chocolate mixture and refrigerate. Only 105 calories per serving.