Step 1

Heat the oil in a frying pan over medium-high heat. Add onion and garlic. Cook for 2 minutes or until onion is soft.

Step 2

Add the cumin, paprika and chilli powder. Cook, stirring, for 1 minute or until aromatic.

Step 3

Add mince and cook, stirring with a wooden spoon to break up any lumps, for 3 minutes or until mince changes colour. Add the tomato, tomato paste and beans. Increase heat to high. Bring to the boil. Reduce heat to medium. Simmer for 5 minutes or until the mixture thickens.

Step 4

Divide the beef mixture among the tortillas and fold to enclose filling. Divide among serving plates. Top with the avocado. Serve with sour cream.