Preheat your oven to 400°F.
Mix the Chorizo sausage meat in a bowl with the ground beef.
Form 6 large patties and season them on top with sea salt and freshly ground black pepper.
Place them in the oven on a roasting pan until well cooked. Check them after 20 minutes, but you’ll have to verify that the meat isn’t pink in the middle anymore.
While the patties cook, fry the onions in some cooking fat on the stove top in a pan. Once well caramelized, set the onions aside and reserve.
Cook the eggs, over easy, in the same pan with a bit more cooking fat if needed. Keep the yolk runny to obtain a sauce for the burger.
Once the Chorizo and ground beef patties are ready, serve them with a squeeze of lime juice topped with the fried onions, tomato slices, avocados and fried eggs