Clean the porcini mushrooms removing soil residues with a damp cloth and slice them.
Sauté the butter with chopped onion in a pan, then add the mushrooms and cook over high heat.
Add the rice gradually until it absorbs the seasoning.
Then, pour in broth little by little and cook the rice.
Deglaze everything with a little dry white wine.
Add broth until absorbed, stirring everything with a wooden spoon.
Repeat the addition and absorption process, stirring constantly, until cooked.
Before turning off the heat, when nearly cooked, add a little more raw butter to make the risotto very creamy.
Once cooked, season with salt and pepper (moderately).
Plate the risotto and sprinkle with grated Parmesan and some parsley.