Slow Cooker Lasagna

Ingredients (15)

• 1 tablespoon olive oil
• 1 yellow onion, diced
• 4 to 5 cloves garlic, minced
• 1 pound ground beef
• 1 can (28 ounces) tomato sauce
• 1 cup water
• ½ teaspoon dried thyme
• ½ teaspoon dried rosemary
• ½ teaspoon Italian seasoning
• Salt and fresh ground black pepper, to taste
• 16 ounces ricotta cheese
• 1 cup crumbled feta cheese
• ½ cup grated parmesan cheese, divided
• 2 cups shredded mozzarella cheese, divided
• 9 No-Boil Lasagna Noodles