Step 1

Mix melted butter and brown sugar in a small bowl. Spread in the bottom of a 9x13 glass baking dish.

Step 2

Place bread slices on top of sugar mixture.

Step 3

In a small bowl, combine eggs, milk and vanilla and beat with a fork until well mixed. Pour the egg mixture over the bread in the casserole dish. Sprinkle with cinnamon if desired.

Step 4

Cover and refrigerate overnight.

Step 5

In the morning, preheat the oven to 350.

Step 6

Remove the casserole from the refrigerate to let it start to come to room temperature. Uncover and bake at 350 for 45 minutes.

Step 7

Let sit for at least 5 minutes before cutting and serving.

Step 8

Serve with powdered sugar or other desired toppings and enjoy!