To spiralize the beets, slice off the tops and bottoms from the beets and peel, using a vegetable peeler or sharp knife. Place a plate at the end of the spiralizer to catch the noodles. Fit one beet in the spiralizer and twirl away. Repeat with the second beet.Check out this post on spiralizing for step by step instructions on spiralizing, with photos.
In a small bowl, vigorously whip together the feta, cream, garlic, and salt.
Heat the olive oil in a sauté pan over medium heat. Add the spring onions and cook for 2 minutes until slightly softened. Add the vinegar and spiralized beets. Toss to completely coat the beet noodles. Cook, tossing and turning the noodles often, for 10 - 15 minutes until al dente.
To serve, divide the whipped feta between the plates, top with beet noodles and sprouts. Drizzle with a little olive oil.