Potato Zucchini and Onion Bake with Mozzarella

Ingredients

• 1 ½ pounds (675 g) potatoes
• 1 medium (7 oz or 200 g) zucchini
• 2 tablespoons (1 oz or 30 ml) olive oil
• 2 (3.5 oz or 100 g) white onions, thinly sliced
• 1/2 teaspoon (2.5 g) salt, divided
• 1/2 teaspoon (1 g) black pepper, divided
• 3 (2 oz or 60 g) whole eggs
• 1 medium (4 oz or 125 g) red bell pepper, diced
• 1/2 cup (2 oz or 60 g) shredded Mozzarella cheese