Tuna Stuffed Pasta Shells

• 24 pcs pasta shells (jumbo cooked)
• 12 ozs tuna in water (drained)
• 120 gr fat-free cottage cheese
• 120 ml fat-free yogurt (plain)
• 60 gr onions (chopped)
• 10 gr fat-free parmesan cheese
• 5 ml lemon juice
• 2 gr parsley
• 1 gr dill weed
• 1 gr garlic powder