Diabetic Easy Oven Stew

• 14 1/2 size
• 5 carrots
• 4 un potatoes (peeled)
• 2 1/2 chunks
• 1 celery rib (cut into)
• 1 onion (cut into)
• 350 gr beef round steak (boneless)
• 200 gr peas (frozen)
• 28 gr quick cooking tapioca
• 16 ml cooking oil