In a large pot, add the vegetable broth and 4 cups of water and cook until the broth begins to boil.
In a frying pan, add the olive oil and onions and cook on a medium-high heat until the onions begin to melt.
Add the sliced mushrooms and stir well. Add a 1/2 cup of water and cover with a lid.
Cook the mushrooms for about 5 minutes, stirring occasionally to avoid burning.
Add the chopped sausage to the mushrooms and mix well.
Cook for another 5 minutes or until the sausage is completely cooked.
Heat another clean frying pan on a medium-high heat and add the butter.
Once the butter is completely melted, add the arborio rice and mix well. The goal here is to slightly toast the rice before we begin cooking.
Once the rice has turned a golden color, began to add the broth to the rice until it slightly covers the rice.
Stir the rice and broth often.
Add the sausage and mushroom mix to the rice and stir well.
Cook the rice for 20 minutes while constantly adding broth and mixing the rice.
Add salt and pepper to the rice to your liking.
Once the 20 minutes is up, you will see that the rice has gained a creamy texture. Taste the rice and make sure that it has cooked all the way through. If need be cook for additional time.
Add the chopped parsley and mix in well with the risotto.
Grate some Parmiggiano Reggiano cheese on top and plate it up to your liking. Buon Appetito!