Start by preheating the oven to 200º.
Wash the beetroot well and peel it.
Slice the beetroot into quarters, wrap them in aluminum foil, and bake them in the oven for approximately 35 to 45 min, depending on the power of your oven.
In a pan, put the diced onion with a dash of olive oil and let it stiffen a bit.
When the onion is soft and translucent, add the chopped garlic and the coriander, also chopped.
Let it sautee for a few more minutes.
Add the risotto rice and once again let it sautee for a few minutes. This process will help the rice to incorporate the flavors.
As soon as the rice starts to get a little translucent, you can add red wine. Mix well until it spreads throughout the pan.
When it starts to bubble, you can add the vegetable broth little by little.
Add ladle by ladle and stir well, so that the risotto becomes creamy. As soon as the rice begins to incorporate the broth and begins to dry out, it's time to add the next ladle.
Remove the beetroot from the oven, dice it and place them in the risotto pan.
Stir well so that the beetroot pieces will spread into the rice. This will result in the whole risotto having a stronger color.
Once the risotto is almost done, add a generous amount of grated Parmesan cheese and butter.
Stir well and turn off the heat.
Serve with a few pieces of beetroot on top and some coriander.