OHMYGODIWANTTOMAKEPETITFOURSFOREVER

My new roommate is a fashion designer. What's more exciting about this is that it's given me and my other roommate a shot of creative energy, and we've all been feeding our own excitement into crafting/sewing/drawing lots of awesome shit.
Our latest inspiration came through the idea of our new Etsy store, in which we'll be selling lots of awesome stuff, and which I'll surely keep you posted on because clearly you're all on the edges of your seats about that. We had this idea to do an Alice-themed photoshoot to photograph our stuff in, and make awesome little hats and beaded headbands and, the best part for me personally, bake awesome little cakes (eeeeee!) for the shoot. So I looked up petit fours, which I remembered from Samantha's Birthday Tea Party set in the American Girl catalog. I remember them being pastel and adorable, and I am so down for that.
So I googled 'petit fours', and, I mean...

THESE THINGS ARE TOTES ADORABLE! I want like eight billion of them. And I mean, seriously, what is not to love about these things? A mini piece of cake dipped in fondant and decorated adorably? How have I not been making these my entire life?
I've been doing a little bit of research on these babies and I guess you can just dip a cube of cake in fondant but traditionally the cakes are also layered with jam and soaked in liquor syrup. Ohmygodthatsoundssogood.
I need to find a good dense vegan cake recipe and a vegan fondant recipe STAT. This is essential to my well-being that I get to make these things as soon as humanly possible.