Baking for fun: Banana brown betty

My mom had a friend over and she asked me to make a dessert and I decided to make a banana brown betty. Super simple and easy. 
Ingredients:
1 1/2 cups graham cracker crumbs
1/2 cup sugar 
6 tbsp butter, melted
4 firm ripe bananas (make sure they are ripe and NOT green)
1 1/2 cups milk    
1/2 vanilla bean, split or 1/2 tsp vanilla extract
1 large egg
1 tbsp all-purpose flour
1 tbsp cornstarch
1/4 tsp salt
Stir together the graham cracker crumbs, 1/4 cup sugar, and the butter. Peel and cut the bananas into 1/2 inch slices and set them aside. Bring the milk and the vanilla bean, if using, to a simmer (if using extract, just wait). While the milk heats, beat the remaining sugar, egg, flour, cornstarch, and salt in a medium bowl until thick and pale yellow. Remove the vanilla bean if using. Gradually whisk half the milk into the egg mix, then whisk the new egg mix into the remaining milk. Cook, whisking constantly, over medium heat until the center bubbles and the mixture had thickened. Remove from the heat and whisk to cool for 1 minute (add vanilla extract if using). Fold the bananas into the hot custard. Gently press half the crumb mix into an 8 by 8 inch pan, 9 inch pie pan or 10 by 6 inch oblong glass baking dish. Then spoon the custard on top and cover the custard evenly with the remaining crumbs. Bake at 350 for 25-30 minutes. Cool for 20 minutes before serving. Serve with vanilla ice cream. I had a bit of a disaster because one banana was green so you were eating this great dessert and all of a sudden you'd get this dry, green banana and it was pretty awful. But like I said, great easy dish. 

See you next time internet! Love, Alexa :)