INGREDIENTS
2 lbs
ground beef
3/4 cup
onion
2 tbsps
olive oil
2 tbsps
worcestershire sauce
1/2 tsp
pepper
1/2 tsp
salt
1 serving
brioche buns
1 serving
havarti cheese
1 serving
sautéed mushrooms
1 serving
onion
1 serving
lettuce
1 serving
mayo
1 serving
tomoatoes