Mix flour, sugar, salt, butter, and chopped nuts together to cornmeal sized pellets. Press into a 13x9 inch greased glass baking dish
Bake for 18-20 minutes at 325 and let cool
remainin sugar, cornstarch, raspberries or other berries cook in a stove top pan until they become clear. let cool. pour berries over the dry ingredients.
Take aprox 45 marshmallows (about 1 bag )- melt on low add one cup milk stir continually, whip one cup heavy cream and add it to marshmallow mix once cool. and sprink with conf sugar on top. ( Im not sure if you can sub fluff I think it might work )