Ive seen a lot of recipes where instant pudding is used as fillings in cakes...where the instant pudding is added to cream and/or milk. I am guessing this would require refigeration of the cake? Correct?

Is there a filling that doesnt require refigeration?

Could I add the instant pudding to buttercream?

Hi,

Because of the dairy products used with the pudding mix I would definitely refrigerate it.

The only thing that comes to mind as far as fillings not being refrigerated are fillings I have seen sold in cake supply stores that come in long plastic sleeves. There are usually fruit fillings and choc flavored fillings.

Or standard buttercream that is shortening and 10 x sugar.

As far as adding instant pudding to buttercream? I don't know how that will taste or let alone work out. Pudding has gelatine in it that is what gives it that thick stable consistency.

Maybe try mixing a small batch and see what happens.