Papa Burger

Ingredients

• 1 pound ground beef or ground bison
• 1/3 cup finely chopped onion
• 1 slice whole wheat or white bread, broken into small pieces
• 2 tablespoons red wine vinegar
• 1 tablespoon liquid smoke
• 2 teaspoons Worcestershire sauce
• 1 teaspoon hamburger or steak seasoning
• 1/4 to 1/2 teaspoon garlic salt
• 1/4 to 1/2 teaspoon pepper
• 1/4 cup all-purpose flour
• 4 onion hamburger buns, split
• 4 Bibb or Boston lettuce leaves
• 1/3 cup prepared Thousand Island salad dressing
• 4 slices process American cheese
• 4 slices red onion
• 1 large heirloom tomato, sliced