Heat olive oil in a large deep skillet over medium heat. Add Italian sausage and cook until browned.
Add minced garlic to the skillet and sauté for 1 minute until fragrant.
Stir in the pasta sauce, Italian seasoning, and water. Bring to a simmer.
Break the lasagna noodles into 1-2 inch pieces and stir them into the sauce.
Cover the skillet, turn heat to medium-high, and bring to a boil.
Reduce heat to medium-low, cover, and simmer for about 15 minutes, stirring occasionally.
While noodles cook, mix ricotta cheese, Parmesan cheese, salt, and pepper in a small bowl.
Dollop the ricotta mixture over the cooked noodles. Top with shredded mozzarella and let it melt.