Vegetarian Mexican Tortilla Casserole with Cheesy Layers

Ingredients

• 1 large red onion, chopped
• 2 garlic cloves, chopped
• 1 red bell pepper, diced (140 g)
• 1 cup mushrooms, sliced (96 g)
• ½ cup sweet corn (82 g)
• ½ cup chopped cilantro (8 g), plus extra for serving
• 2 tablespoons extra virgin olive oil
• 1 tablespoon taco seasoning
• 1 14 oz can tomato purée
• 1 14 oz can kidney or black beans, drained
• ¼ teaspoon sea salt
• ¼ teaspoon ground black pepper
• 2 cups cheddar cheese, shredded (200 g)
• 6 corn tortillas