Best-Ever Grilled Burgers

Ingredients

• 1 egg, lightly beaten
• 1/2 cup water
• 1/4 cup finely chopped onion, leek, shallot, or green onions
• 1/4 cup grated Parmesan, Romano, or Asiago cheese (1 ounce)
• 2 tablespoons snipped fresh basil or parsley or 1 teaspoon dried basil or parsley, crushed
• 2 tablespoons Worcestershire sauce or steak sauce
• 1 1/2 teaspoons instant beef bouillon granules
• 1 teaspoon garlic powder
• 1/2 teaspoon black pepper
• 1 pound ground beef
• 1 pound ground pork
• 8 onion buns, hamburger buns, or kaiser rolls, split and toasted
• 1 recipe Mustard Sauce
• Lettuce leaves (optional)
• Thin tomato slices (optional)
• Thin red onion slices (optional)
• Dill pickle spears (optional)

Preparation

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