Slow Cooker Lasagna - Red Gold Tomatoes

Ingredients

• 1 tablespoon olive oil
• 1 pound ground beef
• 1/2 onion, diced
• 3 garlic cloves, minced
• 1 teaspoon Italian seasoning
• 1 can Redpack Canned Diced Tomatoes 28 oz
• 1/2 can Redpack Canned Tomato Puree 29 oz
• 1 (28 ounce) ricotta cheese, whole milk variety
• 1 egg, lightly beaten
• 1/4 cup Parmesan cheese
• 9 lasagna noodles, not the oven ready type
• Salt and black pepper to taste
• 1/2 cup water
• 5 cups mozzarella cheese, shredded and 1 cup set aside