I'm planning on making a Momofuku Milk Bar style cake. Three layers of rich, dark chocolate cake, moistened with an espresso syrup, sandwiching a cookie dough buttercream and brownie chunks. Pure, unadulterated, delicious diabetes.
I had this idea for cookie dough frosting (which I found actually exists after a quick google), but I hate those "food safe cookie dough" recipes that don't use eggs, because they're just not good. So my idea is to take a regular cookie dough recipe, cut the amount of flour significantly, and pasteurize the eggs myself in a double boiler while whisking aggressively to get them all fluffy and expanded in volume while being food safe. (I've done this before to make a schichttorte, which I highly recommend making, incidentally.)
I don't plan on this having the same consistency as buttercream, as I want it to sort of be a hybrid between the two. Does it seem like this should work, or am I being unrealistic?