One Pot Flatbread Lasagna

Ingredients

• 2 tbsp (30 ml) olive oil
• 1 yellow onion, diced
• 3 garlic cloves, finely chopped
• 1 lb (454 g) ground beef
• 1 tbsp (15 ml) oregano, dried
• 1 tbsp (15 ml) fennel seed, ground
• Salt, pepper
• 1 ricotta cheese mixture (SEE NOTE)
• 4 cups (1 L) tomato sauce
• 1 pack (9 oz / 250 g; 4 sheets per pack) Lavash Flatbread or 8 flour tortillas
• ½ ball (4 oz / 115 g) fresh mozzarella, sliced