1/2 cup freshly grated Parmesan (about 1 1/2 ounces)
1 tablespoon bottled horseradish
Instructions
Finely chop onion and trim stems close to tops of beets.
Cut greens into 1/4-inch-wide slices and chop stems.
Peel beets and cut into fine dice.
In a small saucepan bring water to a simmer and keep at a bare simmer.
In a 3-quart heavy saucepan cook onion in butter over moderate heat until softened.
Add beets and stems and cook, stirring occasionally, 5 minutes.
Stir in rice and cook, stirring constantly, 1 minute.
Stir in 1 cup simmering water and cook, stirring constantly and keeping at a strong simmer, until absorbed.
Continue cooking at a strong simmer and adding water, about 1/2 cup at a time, stirring constantly and letting each addition be absorbed before adding next.
After 10 minutes, stir in greens and continue cooking and adding water, about 1/2 cup at a time, in same manner until rice is tender and creamy-looking but still al dente, about 8 minutes more.