Preheat the grill to medium-high heat.
Mix all the ingredients in a large bowl and season to taste with salt and pepper.
2 lb. grass-fed ground beef, 3 green onions, 2 garlic cloves, 2 tbsp. fresh parsley, 1 tbsp. fresh sage, ½ tbsp. dried oregano, 1 tbsp. herbes de Provence, 2 tbsp. Dijon mustard, 1 large egg
Once everything is well combined, form the meat mixture into 6 equal-sized patties.
Adjust the seasoning on the burgers and place them on the grill.
Sea salt and freshly ground black pepper
Grill the burgers for 5 to 7 minutes per side or to desired doneness.
Let the burgers rest for 2 to 3 minutes before serving.