Susan's StoryMade this for years and I noticed some were asking for recipe when viewing Magic Crust Custard Pie.
bisquick baking mix
unsweetened baking chocolate melted
1Place all ingredients into blender and blend on high for 1 min.
2Pour into greased 9 inch pie plate and bake at 350* for 30 minutes or till top springs back. Flour settles and makes its own crust.
3Cool completely then top with whipped cream.