Genovese-style Artichokes

INGREDIENTS

• 3 tablespoons olive oil, plus 1/4 cup
• 4 garlic cloves, chopped
• 4 slices prosciutto (about 2 ounces), chopped
• 2 tablespoons chopped fresh parsley leaves
• 1 pound button or Roman mushrooms, trimmed and chopped (about 4 cups)
• 4 fresh artichokes, trimmed and cleaned
• 1/2 cup grated Parmesan
• 1 teaspoon salt
• 2 cups white wine
• 1/2 teaspoon pepper
• 1 onion, diced