Taste it. Is it tender (as it would be if cooked) or crunchy (as if raw)? Though I cannot imagine eating raw beets, so I'd be surprised if they are raw. If they are raw or cooked but still firm, you could steam them for a few minutes to soften them up and make them tender.
They're probably raw for salads. If your beet cake is patterned on the carrot cake model, then the beets should probably be raw anyway. If you need to be able to puree them, though, do as above to test for crunch and proceed as cookbookchick recommends.
Taste them to make sure that they don't have any vinaigrette on them.
Please enter a valid email address.
Well played. You deserve a cookie.
Put the sauce on hold and save the sandwiches for later: It's cake time
Tomato-Ricotta Cake (!)
A No-Forks-Needed Vegan Appetizer
Shop Finishing Touches
What's the Deal with Clingy Peaches?
Lookin' Sharp, Knives!
prevented successful signup:
We'll never post anything without your permission.
prevented successful login:
Thanks for signing up!
Connect with us to get more Food52!
Sign up for our useful, inspired emails and we'll
give you everything you need to eat and live better—including
recipes, how-tos, and exclusives and great gift ideas from our
kitchen and home shop.