Theresa's Triple Cheese Bacon burger

Combine first 7 ingredients and mix very well. Mix the sharp cheddar and Swiss cheeses and lightly press into 1/4 cup balls. Divide meat into four balls, patty out each ball into 5 inch circles about 1/4 inch thick. Place ball of cheese into center of meat, wrap meat around cheese, patty out burger to about 3 inch circle about 1/2 inch thick. Grill burgers about 5 minutes per side or to desired doneness. About 1 minute before removing from grill, top each burger with a slice of American cheese.