Curried cauliflower

Ingredients

• 1/2 cauliflower, cut into florets
• 1/2 teaspoon chilli flakes, or 1 teaspoon if spice is preferred
• 1 tablespoon oil
• 1 teaspoon turmeric
• 1 teaspoon coriander
• 1 teaspoon cumin
• 400 gram can diced tomatoes
• 1 onion, chopped