This uses cream, but it was darn good...Oreo Cookie filling from Whimsical Bakehouse.
She simply whipped heavy cream and folded in chopped oreos, but I added a tub of whipped Philadelphia cream cheese to give a bit of tang and more structure.
Used it between and on top of a layered chocolate cake.
2 C heavy cream
1/4 C sifted powdered sugar
1 tsp vanilla
1 tub of whipped Philadelphia cream cheese
1/2 package Oreo cookies, chopped (you can pick any flavor...I went with the basic. I kept thinking the peanut version would be good, but the cake was a housewarming gift and I wasn't sure she liked peanut butter)
I used my KA whisk to beat the heavy cream, then changed bowls and mixed the cream cheese with the sugar and vanilla. Then I hand-folded in the heavy cream (didn't want to make butter).
After spreading, I refrigerated to firm it up a bit, then poured a runny chocolate ganache over the top. It wasn't smooth because the oreo filling is lumpy.
My other favorite is raspberry jam thinned with Chamboud mixed with chocolate buttercream I buy from a bakery.