Mexican Baked Egg Brunch

Name: Mexican Baked Egg Brunch
Ingredients: 2 tbsp vegetable oil; 2 large onions (peeled and chopped finely); 150 g chorizo (finely chopped); 150 g pancetta or bacon (finely chopped); 400 g can chopped tomatoes in juice; 1 tbsp fresh mixed chilli (chopped (optional, if you like spice)); 150 g mixed peppers (jarred and sliced); 1 stock cube (any); 4 tbsp tomato purée; 200 ml water; 1 tbsp Worcestershire sauce; 2 tbsp any vinegar; 400 g refried beans; 400 g black beans (drained); 1 large ripe avocado (chopped); 4 eggs; handful coriander for sprinkling; chopped chilli (if using)