Mix 1 Cup Brown Sugar and Butter in bowl to combine
Spread sugar & butter mixture on bottom of casserole dish
In a separate bowl whip eggs
Add Vanilla and Milk
Whisk to combine
Layer Texas Toast over Brown Sugar & Butter Mixture in Casserole Dish
Pour half the Custard over first layer of Texas Toast
Sprinkle on Cinnamon
Sprinkle Powdered Sugar
Add a second layer of Texas Toast
Pour remaining Custard over the new layer
Sprinkle with Cinnamon
Sprinkle with Brown Sugar
Cover with Tin Foil and refrigerate over night
Preheat oven to 350 degrees
Bake for 50 minutes
Cut into slices and serve