The Food Lovers' Primal Palate: Pumpkin Spice Cakes and Pumpkin Spice Cookies

I made this today and it was delish. I am SO PICKY about baked goods and this came out great (subbed kerrygold for coconut oil). I posted it on facebook and my SIL asked me to make it for thanksgiving. They are very primal/paleo friendly.

I want to fancy it up though and that icing recipe sounds kind of gross. I'm thinking of doing 2 layers and spreading with whipped cream laced with bourbon. Any ideas on how to stabilize whipped cream using primal stuff? I used to use corn starch in the past, but its not primal/paleo.