Beef Manicotti

• 4 mushroom stems
• 3 bread torn up (sliced)
• 1 clove garlic (minced)
• 1 italian seasoning
• 1 egg
• 950 ml water
• 450 gr beef (lean ground)
• 425 ml tomato sauce
• 350 gr tomato paste
• 170 gr mozzarella cheese (shredded)