Honestly, I'm pretty much hating on the taste of beets. Kale took me a while to accept and I can puree that raw into stuff and tolerate it. But beets are a bit too earthy and I need to take a page from the book of Jessica Seinfeld's Deceptively Delicious.
Find Me A Beat Chocolate Cake
1 box dark chocolate cake mix
1 egg or mashed banana to use as a binder
2 TBS oil, preferably olive oil
1 cup of beet puree (nuke skinned/chopped beets with 1/2 cup of water in a large microwave safe bowl for about 10 minutes, let cool and blitz in a blender), measure out the aforementioned amount
1/2 cup cocoa powder
Trader Joe's Whipped Topping, thawed (no creepy hydrogenated oils)
1/2 cup peanut or almond butter
Put thawed whipped topping in a large bowl. In a small bowl with the peanut butter, stir a 1/2 cup of whipped topping into peanut butter vigorously. Then fold PB into the whipped topping and use enough to frost or fill.
Mix all ingredients together for 2 minutes with a normal hand mixer, scrape sides as needed. Pre-heat oven according to cake mix directions, I used two 9" pans and it came out great. Let the cake cool and frost with above frosting.