Healthy Stuffed Shells

What You Need

• 2 boxes jumbo pasta shells
• 1 container (24 oz.) low-fat ricotta cheese
• 1 container (24 oz.) fat-free cottage cheese
• 3 tsp. basil pesto
• 3 tsp. minced garlic
• 3 cups shredded fresh spinach
• 2 cups chopped fresh mushrooms
• 1 tsp. oregano
• 1 tsp. basil
• 1/2 tsp. crushed red pepper
• 2 tsp. garlic salt
• 2 bags (8 oz. each) shredded mozzarella, divided
• 2 cans diced Italian tomatoes, divided
• 1 jar spaghetti sauce