Slow Cooker Lasagna - Munchploits!

Ingredients

• 12 lasagna noodles, cooked and drained
• 1 lb ground beef
• 1 onion, chopped
• 3 cloves garlic, minced
• 1 can 28oz crushed tomatoes
• 1 can 14oz tomato sauce
• 2 tsp dried basil
• 1 tsp dried oregano
• 1/2 tsp salt
• 1/4 tsp black pepper
• 1 cup ricotta cheese
• 1 cup shredded mozzarella cheese
• 1/2 cup grated Parmesan cheese
• 1 egg
• 2 tbsp fresh parsley, chopped