If using fresh black trumpets, inspect them for leftover leaves or debris, trim the stems, and slice or pull them into smaller chunks. For dried black trumpets, soak them in warm water for about 15 minutes to rehydrate, then drain them thoroughly before cooking.
Mince the garlic and finely chop the onions into small, even pieces.
Toast sunflower seeds in a dry pan over medium heat until they turn lightly golden. Remove them from the pan and set aside for later.
Add a drizzle of olive oil to the same pan and stir-fry the black trumpets until they release moisture and shrink slightly. Set them aside.
In the same pan, heat more olive oil and sauté the onions over low to medium heat until they soften and turn translucent. Stir frequently to prevent them from burning.
Add the rice to the pan, toasting it briefly until it becomes slightly translucent. Pour in the white wine and let it simmer, stirring often, until the liquid reduces and the alcohol evaporates. Season with salt and black pepper to taste.
Stir in the toasted sunflower seeds. Gradually add hot vegetable stock, half a cup at a time, letting the rice absorb the liquid before adding more.
Continue stirring frequently and cook for about 18 minutes. When the rice is nearly cooked, stir in a pat of butter.
Add the cooked black trumpets and gently mix them into the risotto.
Mix in grated Parmesan until fully melted and creamy, reserving a little for sprinkling on top. Alternatively, garnish with fresh parsley for a bright, herbaceous touch.
Serve immediately while the risotto is warm. Enjoy!