Cast-Iron Lasagna | Recipe Saver

Ingredients

• 2 tablespoons olive oil
• 2 cups yellow onion, finely chopped
• 3 cloves garlic, minced
• 1/4 teaspoon red pepper flakes
• 1 pound sweet Italian sausage, casings removed
• 3 (14.5-ounce) cans fire roasted diced tomatoes
• 15 ounces ricotta
• 1 egg yolk
• 1/4 teaspoon dried thyme
• 1/2 teaspoon dried oregano
• salt, to taste
• pepper, to taste
• 2 1/2 cups mozzarella, shredded
• 1/3 cup parmesan cheese, freshly grated
• 12 no-boil lasagna noodles, broken in half
• 2 tablespoons fresh basil, optional, for garnish