Baked Rice Casserole

Ingredients (9)

• 1 1/2 cups arborio rice
• 1 medium white onion, diced
• 3 tablespoons olive oil
• 1/2 cup white wine or lager beer
• 3 1/2 cups beef stock
• 1 cup Parmesan cheese
• 10-12 ounces cremini mushrooms, sliced
• 3 tablespoons unsalted butter
• Salt and pepper