Ingredients
8ozground round
4ozground sirloin
4ozground chuck
1½tspssalt
1tspground black pepper
¼tsponion salt
¼tspgarlic salt
½cupthousand island dressing
½cupFrench salad dressing
2tbspsketchup
¼tspworcestershire sauce
4sourdough bread,sliced
1tbspsoftened butter
2American cheese,sliced
2Swiss cheese,sliced
Preparation
In a medium-sized bowl add the ground round, ground sirloin, and ground chuck. Combine and mix. Allow meat to rest about 10 minutes in the refrigerator before forming four 4-ounce balls of meat.
While the meat is resting combine the salt, black pepper, onion salt, and garlic salt in a small bowl.
Prepare the Frisco sauce by combining the thousand island dressing, French dressing, ketchup, and Worcestershire sauce in a bowl. Set aside.
Preheat the griddle to 375 degrees F. Butter bread on one side, and allow the bread to toast on the griddle while the burger cooks.
Once the cooking surface has heated up fully, place the meatballs onto the cast iron skillet. Press the burgers into thin patties. Use a spatula to press the burgers into thin patties. Season with the burger seasoning.
These burgers cook very quickly for 2 to 3 minutes on the first side. Once the edges begin to brown, flip the burgers and season them again. Place the 4 slices of cheese onto the meat patties.
They will need to cook for 1 to 2 minutes before they are cooked through.
Spread the Frisco sauce on the untoasted portion of the bread liberally.
Build the burger starting with a piece of the toasted bread, and then place a meat patty topped with Swiss cheese, and then one topped with American cheese, and top with a piece of toasted bread.
