Banana Stuffed French Toast

INGREDIENTS

loaf french bread ((use a loaf that's one or two days old))

5 cups

cornflakes

3/4 cup

milk ((preferrably whole or 2%))

1/2 cup

buttermilk

large eggs

1/2 tsp

vanilla extract

1 1/2 tbsp

granulated sugar

1 1/2 tbsp

flour

1/4 tsp

baking powder

1 pinch

salt

1 1/2 tsp

ground cinnamon

1/4 tsp

ground nutmeg

firm but ripe medium bananas (, peeled and sliced into 1/4-inch slices)

3 tbsp

packed light-brown sugar

1/4 cup

salted butter (, for griddle)

Maple or buttermilk syrup (, for serving)