1/2 c Brown sugar; packed 1/4 c Butter 1 c Bisquick baking mix 1/2 c Walnuts; chopped 1 pk Cream cheese; 8 oz softened 1/4 c Sugar; granulated 1 T Lemon juice 2 ts Milk 1/2 ts Vanilla 1 Egg Fat grams per serving: Approx. Cook Time: :45 Preheat oven to 350F. Grease 8" square pan. Mix brown sugar and butter till well blended. Stir in Bisquick and walnuts till mixture is crumbly; reserve 1 cup. Press remaining mixture in pan with fingers. Bake 12 minutes. Mix cream cheese and granulated sugar; beat in remaining ingredients till smooth. Spread cream cheese mixture over layer in pan; sprinkle with crumbly mixture. Bake till centre is firm, about 25 minutes. NB. Results aren't always consistent (sometimes it's too crumbly or the bottom layer sticks in the pan).