Easy Lasagna (One Pan/Skillet)

Bahan-bahan (6 porsi)

• ½ pound Italian sausage
• ½ pound lean ground beef
• 1 yellow onion (diced)
• 3 cloves garlic (minced)
• 1 (24 ounce each) jar marinara sauce (or pasta sauce)
• 1 (14.5 ounce each) can diced tomatoes (drained)
• 1 teaspoon Italian seasoning
• salt and black pepper (to taste)
• 2 cups ricotta cheese
• 1 large egg
• ½ cup grated Parmesan cheese (divided)
• 12.5 ounces fresh lasagna noodles (not dried noodles)
• 1½ cups shredded mozzarella cheese (divided)