Begin by dicing the onion and garlic. Heat up a small Dutch oven over meadium heat and place the butter, olive oil, onions, and garlic in the pot. Saute for 3-4 minutes.
Add the sliced mushrooms to the skillet, season with salt and pepper, and cook until they are tender and golden brown, about 5-7 minutes.
To the skillet with the mushrooms, add the Arborio rice. Stir to coat the rice in the oil and cook for 1-2 minutes until the edges of the rice become translucent.
Deglaze with Wine by pouring in the white wine and stir constantly until it is absorbed by the rice.
Add warm broth to the skillet, one ladleful at a time, stirring frequently. Allow each addition of broth to be absorbed by the rice before adding more. Continue this process until the rice is creamy and al dente, which should take about 18-20 minutes.
Once the rice is cooked to your desired consistency, stir in the grated Parmesan cheese. Taste and adjust the seasoning with salt and pepper if needed. Serve the mushroom risotto hot, garnished with fresh chopped parsley.
Notes
Hint: For firmer mushrooms in your risotto, reserve half the mushrooms from the pan before adding the rice and set aside. Then once the risotto is cooked, stir in the mushrooms with your parmesan cheese.