I start by greasing a 9×13-inch baking dish. I spread half of the bread cubes across the bottom.
I layer half of the turkey, half of the ham, and half of both cheeses over the bread.
I repeat the layers with the remaining bread, turkey, ham, and cheese.
In a large bowl, I whisk the eggs and whole milk until smooth.
I pour the egg mixture evenly over the casserole. I press down gently so the bread absorbs the liquid.
I let the dish rest for 15 minutes on the counter. This helps the bread soak fully.
I bake the casserole at 350°F for 45 to 50 minutes until the center sets and the top turns lightly golden.
I rest the casserole for 10 minutes after baking.
I dust the top with confectioners’ sugar and serve with raspberry preserves on the side.