Healthy Burgers Recipe

Name: Healthy Burgers Recipe
Prep time: 25 min
Cook time: 15 min
Total time: 40 min
Cuisine: American
Ingredients: 200 g lean beef mince; 1 onion, one quarter finely chopped, the rest thinly sliced; 1 carrot, grated; 1 tsp worcestershire sauce; 2 tbs breadcrumbs; to taste pepper, to taste; spray olive or canola oil spray; 2 wholemeal or wholegrain rolls; 2 tbs salt-reduced tomato sauce, optional; 4 leaves lettuce; 4 slices canned beetroot slice; 1 tomato, sliced; 1/2 avocado, sliced