overnight pumpkin french toast casserole

Ingredients For overnight pumpkin french toast casserole

• 1

  loaf of challah bread, cut into cubes
• 2

  cup of whole milk
• 3/4

  cup of heavy cream
• 5

  eggs
• 1/4

  cup of granulated sugar
• 3/4

  cup of brown sugar
• 1 Tbsp

  of pure pumpkin puree
• 1 Tbsp

  of vanilla extract
• 1 Tbsp

  of pumpkin pie spice
• 1/2 tsp

  of orange zest
• FOR THE TOPPING:
• 1/4

  cup of flour
• 1/4

  cup of granulated sugar
• 1/4

  cup of brown sugar
• 6 Tbsp

  of unsalted butter, cold and cut into small cubes
• 1/2

  cup of chopped walnuts