Mexican steaks with beans

Ingredients

• 1 tablespoon vegetable or olive oil
• 1/2 red onion, finely chopped
• 1 clove garlic, crushed
• dried chilli flakes
• 2 tablespoons tomato paste
• 400 grams can red kidney beans, rinsed
• 2 tablespoons coriander, coarsely chopped
• 2 tablespoons lemon juice
• 1 tablespoon taco seasoning
• 4 75 gram beef minute steaks
• 2 tomatoes, coarsely chopped
• 1/2 avocado, coarsely chopped
• lemon wedges, to serve