Slow Cooker Mushroom Spinach Lasagna

Ingredients

• 1 pkg (6 oz each) baby spinach leaves
• 1 can (14.5 oz each) Hunt's® Diced Tomatoes with Basil, Garlic and Oregano, undrained
• 6 dry lasagna noodles, uncooked
• 1/4 teaspoon ground black pepper
• 1/2 teaspoon dried Italian seasoning
• PAM® Original No-Stick Cooking Spray
• 1 pkg (8 oz each) fresh sliced mushrooms
• 1-1/2 cups shredded Italian blend or mozzarella cheese, divided
• 1 tablespoon olive oil
• 1/4 teaspoon salt
• 1 container (8 oz each) part-skim ricotta cheese
• 1/2 cup grated Parmesan cheese, divided
• 2 cups Hunt's® Tomato Sauce