Fill a medium-size pot halfway full with water. Bring to a boil.
Cut the brisket in 1-inch pieces and place in the boiling water. Cook for 2 minutes.
Line the slow cooker with a plastic, disposable liner.
Add the partially cooked meat, along with the chopped onion, canned tomatoes, grated Granny Smith apple, lemon juice, salt, pepper, and paprika to the slow cooker.
Rinse the rice well, until the water runs clear, then add it to the pot.
Cover the ingredients with the water, then nestle in the whole potatoes. Place the eggs in a slow cooker bag and add them to the pot.
Cook on low for 10-12 hours.
Check in the morning and add more water if it seems dry.
Add another large squeeze of lemon juice before serving. Serve with prepared tahini, Israeli chopped salad and challah.