Roasted Garlic and Mushroom Risotto

Name: Roasted Garlic and Mushroom Risotto
Ingredients: 1 head garlic; 2 1/2 teaspoons extra-virgin olive oil; 2 (14.5-ounce) cans chicken broth; 3 cans water; 1 medium onion, chopped; 1 (8-ounce) package sliced mushrooms; Salt and freshly ground black pepper; 2 1/2 cups long-grain rice; 2 tablespoons unsalted butter; 1/2 cup grated Parmesan; Risotto Cakes, optional, recipe follows; 3 cups leftover risotto from Roasted Garlic and Mushroom Risotto recipe; 2 large eggs; 1/2 cup frozen corn, thawed; 1/2 cup fresh bread crumbs; 1/4 cup grated Parmesan; Kosher salt and freshly ground black pepper; 1/4 cup canola oil