Lasagna Ring Recipe

Ingredients

Meat sauce: * ½ medium yellow onion, diced * 1 lb ground beef * 1 teaspoon salt * 1 teaspoon black pepper * 15 oz tomato sauce Cheese filling: * 15 oz ricotta cheese * ½ cup fresh basil, chopped * 1 large egg * ½ cup shredded parmesan cheese Béchamel Sauce: * 4 tablespoons unsalted butter * 4 tablespoons all-purpose flour * 2 cups milk * salt, to taste * freshly ground black pepper * ½ cup shredded parmesan cheese * fresh parsley, chopped, for garnish