My dad is a harsh diabetic and LOVES his Reese's Penaut Butter Cups. He'll have three in one day!!!
So I need sugar free recipes for chocolate :)

Does anyone know a good version af the sweet potatoe casserole-you know the one that has sweet potatoes, brown sugar,pecans,and marshmallows on top?
I had RNY 10/13/10 and am on soft solids. I really love the sweet potatoe casserole and would love to be able to make a WLS compatable version.

Sure!    But the texture will be thicker and heavier than what we assoc. for a whipped topping.

Another idea which I know works -- I have a recipie somewhere in my box at home, I'll see if I can dig it out and get it to you.     But I used to make a marangue with whipped egg whites or powdered egg whites and use spenda and some kind of flavored syrup.  This will give you the light foamy texture we associate with whipped toppings minus the fats... but also adds a bit of protein too!      My mom does this but then folds in a ff/ sf  pudding to give it more of a "mousse" texture.
You can get the powdered egg whites in many baking sections of the grocery store and sometimes even Hobby Lobby carries it in the cake decorating section as it's used in some frosting recipies to give a "hardening" option to frosting.

can i puree this?

Yogurt could be used as a whipped topping but it would not be light and airy.

Yogurt also does not contain enough fat (30%+) to "whip"  You can, however, add gelatin to the yogurt and the gelatin will provide the necesary structure to hold the air.