Minced Beef in Zucchini Boats

Ingredients

• 3 (7 oz or 200 g) zucchini
• 2 tablespoons (1 fl oz or 30 ml) olive oil
• 1 medium (3.5 oz or 100 g) red onion, chopped
• 1 teaspoon (3 g) garlic, minced
• 1 pound (450 g) lean beef, minced
• 2 (4 oz or 125 g) tomatoes, chopped
• 2 tablespoons (30 g) tomato paste
• 2 tablespoons (7 g) fresh basil, chopped
• 2/3 cup (65 g) breadcrumbs
• 1/2 cup (60 g) grated cheddar or mozzarella cheese
• salt and freshly ground black pepper