Tonga Toast is sweet, so sweet that you probably do not want to use syrup. It's only sweet at the one end where the banana is stuffed in. Really, it's heavenly, and if you get some sausage or bacon to balance out the sweet, you are good to go. Here's the recipe so you can get a better idea about how it's made.
Christa
Ingredients:
2 or 4 slices sourdough bread, cut 1 to 1 1/2 inches thick
1 banana
1/3 cup sugar
1 teaspoon cinnamon
1 egg
1/4 cup milk
1/2 teaspoon vanilla
oil or shortening for frying
whipped butter and/or syrup
Method:
Cut a 1-inch pocket in one side of each bread slice. Cut banana in half crosswise, then split each piece lengthwise. Remove peel and stuff two pieces of fruit in each pocket of bread; set aside. Mix sugar and cinnamon; set aside. Mix together well the egg, milk and vanilla.
Heat about 4 inches of oil in a pan to 350º F. Dip stuffed bread into egg/milk mixture and let it soak a few seconds to let penetrate bread. Fry bread on both sides in hot oil until lightly browned, about 3 minutes. Drain on paper towels or wire rack. Sprinkle with cinnamon sugar and serve.