01 - Heat 2 tbsp olive oil and 1 tbsp butter in a large skillet over medium-high heat. Add the sliced mushrooms and sauté until golden brown and tender, about 7 minutes. Season with salt and pepper. Remove half the mushrooms and set aside for garnish.
02 - In a large saucepan, melt 2 tbsp butter over medium heat. Add the chopped onion and cook until soft and translucent, about 3-4 minutes. Stir in the garlic and cook for 1 minute until fragrant.
03 - Add the Arborio rice to the onion mixture and cook, stirring, for 2 minutes until the rice is lightly toasted and glossy.
04 - Pour in the white wine and stir until almost completely absorbed.
05 - Add one ladleful of warm vegetable broth to the rice and stir gently. When the liquid is absorbed, add another ladleful. Continue adding broth, stirring frequently, allowing each addition to absorb before adding the next, until the rice is creamy and al dente, about 18-20 minutes.
06 - Stir in the sautéed mushrooms (reserving the garnish), heavy cream, and Parmesan cheese. Cook for another 2-3 minutes until the risotto is creamy and well combined. Season with salt and pepper to taste. Serve the risotto hot, topped with the reserved mushrooms, fresh parsley, and extra Parmesan if desired.