Beef and Vegetable Stew in Crock Pot (Guvech)

Slow cooking, very easy and delicious, low fat dish. Traditional Turkish dish is high in flavor, low in fat and very healthy..
Ingredients:
500gr. beef chunk
3 tbsp olive oil
2 onions, raughly chopped
4-5 tomatos, peeled cut in cubes
about 200gr. green beans, halved
2 potatos, peeled and cut in cubes
2 eggplants, peeled in strips and cut in cubes
2 zucchinis, cut in cubes
about less than 1 cup frozen or fresh peas
4-5 cloves of garlic
salt and pepper to taste
1/2 cup water