Ingredients
Method
- Grate the onion and garlic; sauté with the chopped mushrooms and herbs until softened. Let cool.
- Combine the ground meat with the sautéed mixture, mustard, breadcrumbs, salt, and pepper.
- Mix gently just until combined (avoid overworking the meat).
- Shape into patties and chill 15-20 minutes to firm up.
- Sear in a hot pan or grill until cooked through, then assemble into burgers.