Ultimate Grilled Beef Burgers with Feta

Ingredients

• 1 lb ground beef (80/20 blend)
• 4 oz feta cheese, crumbled
• 1/4 cup fresh parsley, finely chopped
• 2 tablespoons fresh mint, finely chopped
• 1 clove garlic, minced
• 1/2 teaspoon salt
• 1/4 teaspoon black pepper
• 1 tablespoon olive oil
• 4 burger buns
• Lettuce, tomato, and red onion slices (optional)
• Tzatziki sauce or your favorite condiment (optional)