This Cranberry Pecan Caramelized Onion Cheesy Pull Apart Bread is the easiest, most crowd-pleasing, festive holiday appetizer! You just use a store-bought loaf of bread, make diagonal cuts in it, and then stuff it with a little melted butter, caramelized onions, dried cranberries, chopped pecans, white cheddar, and fontina cheese! It's unbelievably delicious.