Stuffed Zucchini Au Gratin | RICARDO

Ingredients

• 1/2 lb (225 g) lean ground beef
• 2 tablespoons (30 ml) olive oil
• 1 onion, finely chopped
• 4 oz (115 g) chopped white mushrooms
• 2 cloves garlic, finely chopped
• 1/2 cup (125 ml) chicken broth
• 1/4 cup (60 ml) breadcrumbs
• 4 to 6 large zucchini
• 1 1/2 cups (375 ml) tomato sauce
• 1 1/2 cups (375 ml) grated mozzarella
• Salt and pepper