Greek Vegetable Medley

INGREDIENTS

• 2 tablespoons olive oil, divided
• 3 medium sliced onions
• 2 minced garlic cloves
• 2 lbs medium potatoes, peeled and sliced into 1/4 inch rounds
• 2 lbs zucchini, sliced into 1/3 inch rounds
• 1 large red bell pepper, cut into thin rounds
• 1 large green bell pepper, cut into thin rounds
• salt
• pepper
• 1 1/2 cups chopped plum tomatoes, well drained
• 1/2 cup chopped parsley
• 1 teaspoon dried oregano
• water